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document.write("		<p align=\"center\" style=\"margin-top: 3px; margin-bottom: 3px; text-align: left;\">");
document.write("		<b><font face=\"Arial\" size=\"3\">More Geometry Problems:<\/font><\/b><\/p>");
document.write("				<\/td>");
document.write("			<\/tr>");
document.write("		<\/table>");
document.write("			<table border=\"0\" width=\"728\" id=\"table1\" cellspacing=\"0\" cellpadding=\"6\">");
document.write("				<tr>");
document.write("					<td valign=\"top\" width=\"25%\">");
document.write("		<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("		<p style=\"margin-top: 0; margin-bottom: 0\">");
document.write("		<a href=\"http:\/\/www.gogeometry.com\/problem\/problem001.htm\">");
document.write("		Problem 01<\/a>.<br>");
document.write("		Triangle angles, median, congruence, isosceles, ");
document.write("		equilateral.<br>");
document.write("		<br>");
document.write("					<a href=\"http:\/\/www.gogeometry.com\/problem\/problem002.htm\">");
document.write("		Problem 02<\/a>.<br>");
document.write("		Triangle and angles 80-80-20 degrees.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem003.htm\">");
document.write("		Problem 03<\/a>.<br>");
document.write("		Triangle, median and angles, 45 degrees.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem004.htm\">");
document.write("		Problem 04<\/a>. Quadrilateral, equal sides and angles 30-60, 120 degrees<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem005.htm\">");
document.write("		Problem 05<\/a>. Triangle, cevian, equal segments, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem006.htm\">");
document.write("		Problem 06<\/a>. Triangle, cevian, equal segments, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem007.htm\">");
document.write("		Problem 07<\/a>. Triangle, cevian, equal segments, and angles<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem008.htm\">");
document.write("		Problem 08<\/a>. Triangles, equal segments, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem009.htm\">");
document.write("		Problem 09<\/a>. Triangles, equal segments, and angles.<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem010.htm\">");
document.write("		Problem 10<\/a>. Triangle, cevian, equal segments, and angles<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem011.htm\">");
document.write("		Problem 11<\/a>. Right triangle, cevian, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem012.htm\">");
document.write("		Problem 12<\/a>. Triangle, cevian, equal segments, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem013.htm\">");
document.write("		Problem 13<\/a>. Triangle, cevian, equal segments, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem014.htm\">");
document.write("		Problem 14<\/a>. Triangle, median, and angles<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem015.htm\">");
document.write("		Problem 15<\/a>. Triangle, cevian, sum of segments, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem016.htm\">");
document.write("		Problem 16<\/a>. Triangle, cevian, perpendicular, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem017.htm\">");
document.write("		Problem 17<\/a>. Right triangle, altitude, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem018.htm\">");
document.write("		Problem 18<\/a>. Right triangle, cevian, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/problem019.htm\">");
document.write("		Problem 19<\/a>. Right triangle, perpendicular, and Excenter.<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p020_right_triangle_incircle.htm\">");
document.write("		Problem 20<\/a>. Right triangle, altitude, incircles and inradii.<br>");
document.write("		<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p021_triangle_orthocenter_tangent.htm\">");
document.write("		Problem 21<\/a>. Acute triangle, orthocenter, diameter, tangent.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p022_right_triangle_incircles.htm\">");
document.write("		Problem 22<\/a>. Right triangle, altitudes, incircles and inradii.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p023_right_triangle_incircles.htm\">");
document.write("		Problem 23<\/a>. Right triangle, altitude, incircles and inradii.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p024_right_triangle_incircles.htm\">");
document.write("		Problem 24<\/a>. Right triangle, altitude, incircles and inradii<br>");
document.write("		<br>");
document.write("					");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p025_right_triangle_incircles_incenter.htm\">");
document.write("		Problem 25<\/a>. Right triangle, altitude, incircles and inradius.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p026_right_triangle_incircles_incenter.htm\">");
document.write("		Problem 26<\/a>. Right triangle, altitude, incircles and inradius.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p027_right_triangle_incircles_incenter.htm\">");
document.write("		Problem 27<\/a>. Right Triangle, incircles and inradius<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p028_right_triangle_incircles_incenter.htm\">");
document.write("		Problem 28<\/a>. Right Triangle, altitude, incircles and inradius.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p029_right_triangle_incircle_incenter.htm\">");
document.write("		Problem 29<\/a>. Right Triangle, altitude, incircle and inradius. Ten ");
document.write("					conclusions.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p029_geometry_help_theorem.htm\">");
document.write("		Problem 29: Geometry Help<\/a>. Facts you should know.<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p030_right_triangle_incircle_incenter.htm\">");
document.write("		Problem 30<\/a>. Right Triangle, Incircle, Inradius.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p031_right_triangle_incircle_incenter.htm\">");
document.write("		Problem 31<\/a>. Right Triangle, Incircle, Collinears.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p032_triangle_incircle_tangent.htm\">");
document.write("		Problem 32<\/a>. Triangle, Cevian, Incircles, Tangents.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p033_triangle_quadrilateral.htm\">");
document.write("		Problem 33<\/a>. Triangle and quadrilateral.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p034_right_triangle_incircle.htm\">");
document.write("		Problem 34<\/a>. Right triangle, Cevian, Incircles, Tangents and Inradius<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p035_incenter_cyclic_quadrilateral.htm\">");
document.write("		Problem 35<\/a>. <br>");
document.write("		Incenters and Inradii in Cyclic Quadrilateral.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p036_triangle_altitude_incircle.htm\">");
document.write("		Problem 36<\/a>. Right triangle, altitude, incircles and inradii<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p037_triangle_altitude_incenter.htm\">");
document.write("		Problem 37<\/a>. <br>");
document.write("		Right triangle, altitude, incircles, incenters, and orthocenter.<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p038_triangle_altitude_incenter.htm\">");
document.write("		Problem 38<\/a>. Right triangle, altitude, incircles, incenters, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p039_geometry_help_theorem.htm\">");
document.write("		Problem 39 Geometry Help<\/a>. Facts you should know<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p039_triangle_incenter_tangent.htm\">");
document.write("		Problem 39<\/a>.<br>");
document.write("		Triangle, Incircle, Bisector, Cyclic Quadrilateral and angles.<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p040_geometry_help_theorem.htm\">");
document.write("		Problem 40. Geometry Help<\/a>.<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p040_triangle_incenter_excenter.htm\">");
document.write("					Problem 40<\/a>.<br>");
document.write("		Triangle, Incenter, Excenter, Angles 80, 40, ");
document.write("					Distances.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p041_sangaku_mickey_mouse.htm\">");
document.write("					Problem 41<\/a>. <br>");
document.write("		&quot;Mickey Mouse.&quot; Three circles, tangents, ");
document.write("					radii.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p042_angle_triangle.htm\">");
document.write("					Problem 42<\/a>. <br>");
document.write("		Angles, equal segments, and triangles.<br>");
document.write("		<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p043_angle_triangle.htm\">");
document.write("		Problem 43<\/a>. <br>");
document.write("		Angles equal segments, and triangles<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p044_angle_triangle.htm\">");
document.write("					Problem 44<\/a>. <br>");
document.write("		Angles and triangles<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p045_angle_triangle.htm\">");
document.write("		Problem 45<\/a>. <br>");
document.write("		Angles and triangles.<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p046_angle_triangle.htm\">");
document.write("		Problem 46<\/a>. <br>");
document.write("		Triangle, median, and angles.<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p047_angle_triangle.htm\">");
document.write("		Problem 47<\/a>. <br>");
document.write("		Triangle, median, and angles.<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p048_angle_triangle.htm\">");
document.write("		Problem 48<\/a>. <br>");
document.write("		Angles and triangles.<br>");
document.write("					<br>");
document.write("		<a  href=\"http:\/\/www.gogeometry.com\/problem\/p049_right_triangle.htm\">");
document.write("		Problem 49<\/a>. Right triangle, cevian, perpendicular, and angles<br>");
document.write("		<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p050_angle_triangle_equilateral.htm\">");
document.write("		Problem 50<\/a>. <br>");
document.write("		Triangle with Equilateral triangles<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p051_fagnano_triangle_problem.htm\">");
document.write("		Problem 51: Fagnano's Problem<\/a> <br>");
document.write("		Inscribed Triangle with the Minimum ");
document.write("		Perimeter.<br>");
document.write("					<br>");
document.write("					<a  href=\"http:\/\/www.gogeometry.com\/problem\/p052_triangle_angle.htm\">");
document.write("		Problem 52:<\/a> Angle bisector, circles.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p053_angle_bisector_circle.htm\">");
document.write("		Problem 53:<\/a>&nbsp;Angle bisector, circles.<br>");
document.write("					<br>");
document.write("					<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("					<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p054_angle_bisector_circle.htm\">");
document.write("		Problem 54: <\/a>Angle bisector, Circles, Midpoint of arc<br>");
document.write("					<br>");
document.write("					<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p055_angle_bisector_circle_cyclic.htm\">");
document.write("		Problem 55:<\/a> ");
document.write("		Angle bisector, Circles, Cyclic Quadrilateral<br>");
document.write("					<br>");
document.write("					<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p056_angle_bisector_circle_parallel.htm\">");
document.write("		Problem 56:<\/a> ");
document.write("		<br>");
document.write("		Angle bisector, Circles, Parallel Lines.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p057_angle_bisector_circle_cyclic.htm\">");
document.write("		Problem 57:<\/a> <br>");
document.write("		Angle bisector, Circles, Cyclic Quadrilateral.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p058_pythagoras_congruence.htm\">");
document.write("		Problem 58:<\/a>  <br>");
document.write("		Right Triangle, Congruence, Perpendiculars<br>");
document.write("					<br>");
document.write("					<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p059_equilateral_right_triangle_midpoint.htm\">");
document.write("		Problem 59:<\/a> <br>");
document.write("		Right and Equilateral Triangles, Midpoints.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p060_isosceles_angles_problem.htm\">");
document.write("		Problem 60:<\/a> Isosceles triangle, congruence, equilateral.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\"  href=\"http:\/\/www.gogeometry.com\/problem\/p061_mw_triangle_trisection_problem.htm\">Problem 61:<\/a> ");
document.write("		<br>");
document.write("		Trisection of Sides of a triangle, Menelaus theorem<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p062_square_diagonal_inscribed_circle.htm\">Problem 62:<\/a> ");
document.write("		<br>");
document.write("		Square Diagonal, Inscribed Circle.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p063_regular_heptagon_problem.htm\">Problem 63:<\/a> ");
document.write("		Regular Heptagon, side and diagonals, Ptolemy theorem<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p064_triangle_incircle_transversal.htm\">Problem 64:<\/a> ");
document.write("		<br>");
document.write("		Triangle, Incircle, Transversal, Menelaus theorem.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p065_right_triangle_midpoint.htm\">Problem 65:<\/a> ");
document.write("		<br>");
document.write("		Right Triangle, Midpoints.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p066_triangle_excircle_similarity.htm\">Problem 66:<\/a> ");
document.write("		<br>");
document.write("		Triangle, Excircle, Tangents, Geometric Mean, Similarity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p067_triangle_circumcircle_angle_concyclic.htm\">Problem 67:<\/a> ");
document.write("		<br>");
document.write("		Triangle, Circumcircle, Angles, Cyclic Quadrilateral.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p068_triangle_incircle_inradius_tangent.htm\">Problem 68:<\/a><br>");
document.write("		Triangle, Incircle, Inradius, Tangent, Similarity<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p069_square_inscribed_triangle.htm\">Problem 69:<\/a> ");
document.write("		<br>");
document.write("		Square inscribed in a triangle, Similarity.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p070_squares_inscribed_triangle.htm\">Problem ");
document.write("					70:<\/a> <br>");
document.write("		Square inscribed in a triangle, Similarity.<br>");
document.write("		<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p071_cyclic_quadrilateral.htm\">Problem ");
document.write("		71:<\/a> ");
document.write("		Cyclic Quadrilateral, Inscribed angle.<br>");
document.write("					<br>");
document.write("                ");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p072_circle_secant_parallel.htm\">Problem ");
document.write("		72:<\/a>");
document.write("		<br>");
document.write("		Intersecting Circles, Chords, Parallel.<br>");
document.write("		<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p073_intersecting_circles_cyclic_quadrilateral.htm\">Problem ");
document.write("		73<\/a>.<br>");
document.write("		Three Intersecting Circles. Cyclic quadrilateral.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p074_intersecting_circles_cyclic_quadrilateral.htm\">Problem ");
document.write("		74:<\/a><br>");
document.write("		Three Intersecting Circles. Cyclic quadrilateral.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p075_intersecting_circles_cyclic_quadrilateral.htm\">Problem ");
document.write("		75:<\/a> <br>");
document.write("		Three Intersecting Circles. Cyclic quadrilateral.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p076_square_circle_area.htm\">");
document.write("					Problem 76:<\/a> <br>");
document.write("		Area of a circle, square, circular sector.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p077_circle_angle_cyclic_quadrilateral.htm\">Problem ");
document.write("		77:<\/a> Circle, Parallel lines, Cyclic quadrilateral.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p078_circle_angle_congruence.htm\">Problem ");
document.write("		78:<\/a> Circle, Perpendicular and parallel lines, Midpoint, Cyclic ");
document.write("					quadrilateral, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p079_triangle_similarity_altitude_circle.htm\">");
document.write("					Problem 79:<\/a> <br>");
document.write("		Similar triangle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p080_triangle_area_inradius_incircle.htm\">Problem ");
document.write("		80:<\/a> <br>");
document.write("		Area of triangle, ");
document.write("		side, incircle, inradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p081_triangle_area_inradius_circumradius.htm\">Problem ");
document.write("		81:<\/a> ");
document.write("		Area of triangle, ");
document.write("		side, inradius, circumradius.<br>");
document.write("					<br>");
document.write("										<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p082_contact_triangle_area_inradius_circumradius.htm\">Problem ");
document.write("		82:<\/a> <br>");
document.write("		Area of the Contact Triangle, ");
document.write("		inradius, circumradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p083_contact_triangle_excircle_area.htm\">Problem ");
document.write("		83<\/a>. <br>");
document.write("		Area of the Excircle Contact ");
document.write("		Triangle, exradius, circumradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p084_contact_triangle_incircle_excircle_area.htm\">Problem ");
document.write("		84<\/a>. <br>");
document.write("		Contact Triangles Areas, Incircle, Excircle, Inradius, Exradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p085_contact_triangle_incircle_excircles_area.htm\">Problem ");
document.write("		85<\/a>. Contact Triangles Areas, Incircle, Excircle.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p086_contact_triangle_intouch_extouch_area.htm\">Problem ");
document.write("		86<\/a>. Intouch and Extouch ");
document.write("					Triangles, Areas.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p087_quadrilateral_area_diagonal_midpoint.htm\">");
document.write("					Problem 87<\/a>. Area of Quadrilaterals and Midpoints of ");
document.write("					Diagonals.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p088_triangle_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 88<\/a>. Triangle and Quadrilateral Areas, Midpoints.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p089_triangle_area_midpoint_example.htm\">Problem ");
document.write("		89<\/a>. Triangle Areas, Midpoints.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p090_quadrilateral_triangle_area_midpoint.htm\">Problem ");
document.write("					90<\/a>. <br>");
document.write("		Quadrilateral and Triangle ");
document.write("					Areas, Midpoints.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p091_similar_triangles_altitude.htm\">Problem ");
document.write("		91<\/a>. Similar Triangles, Altitude, Parallel.<br>");
document.write("		<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p092_similar_triangles_circle.htm\">");
document.write("					Problem 92<\/a>. Similar Triangles, Circumcircles, Circumradii, Parallel.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p093_parallelogram_circle_elearning.htm\">Problem ");
document.write("		93<\/a>. <br>");
document.write("					Similar Triangles, Circumcircles, Parallelogram.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p094_similar_triangles_parallel_elearning.htm\">Problem ");
document.write("		94<\/a>. Similar Triangles, Circumcircles, ");
document.write("		Circumradii.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p095_similar_triangles_inradii_elearning.htm\">Problem ");
document.write("		95<\/a>. Similar Triangles, Inradii, ");
document.write("		Parallel.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p096_parallelogram_circle_elearning.htm\">Problem ");
document.write("		96<\/a>. Similar Triangles, Incenters, Parallelogram.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p097_similarity_areas.htm\">");
document.write("					Problem 97<\/a>. Similar Triangles, Areas.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p098_quadrilateral_area_centroid_similarity.htm\">Problem ");
document.write("		98<\/a>. Quadrilateral Area, Centroid, ");
document.write("		Similarity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p099_circle_area_pythagoras.htm\">Problem 99:<\/a> ");
document.write("					Circle Area, General Extension to Pythagoras' Theorem.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p100_archimedean_circle_area_elearning.htm\">Problem ");
document.write("		100<\/a>. Circle Area, Archimedes' ");
document.write("					Book of Lemmas<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p101_equilateral_triangle_pythagoras_angle_elearning.htm\">");
document.write("					Problem 101<\/a>.Equilateral Triangle, Interior Point, ");
document.write("					Pythagorean Theorem, Angles.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p102_equilateral_triangle_pythagoras_area_elearning.htm\">Problem ");
document.write("		102<\/a> .Equilateral Triangle Area, ");
document.write("					Interior Point.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p103_equilateral_triangle_heron_area_elearning.htm\">Problem ");
document.write("		103<\/a>. Equilateral Triangle Area, ");
document.write("		Interior Point, Heron's Formula.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p104_angles_triangle_elearning.htm\">Problem ");
document.write("		104<\/a>. Angles, Triangle.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p105_angles_triangle_elearning.htm\">Problem ");
document.write("		105<\/a>.Angles, Triangle. Interior ");
document.write("					Point.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p106_angles_triangle_elearning.htm\">Problem ");
document.write("		106<\/a>.Angles, Triangle. Cevian.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p107_angles_triangle_elearning.htm\">Problem ");
document.write("		107<\/a>.Angles, Triangle. Cevian.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p108_angle_triangle_median.htm\">");
document.write("					Problem 108<\/a>. Angles, ");
document.write("					Triangle, Median.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p109_angle_right_triangle_cevian.htm\">");
document.write("					Problem 109<\/a>. Angles, ");
document.write("					Right Triangle, Cevian.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p110_area_contact_triangle_elearning.htm\">Problem ");
document.write("		110<\/a>. Area of Contact Triangle.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p111_orthogonal_circles_elearning.htm\">Problem ");
document.write("		111<\/a>. Orthogonal Circles.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p112_area_square_elearning.htm\">Problem ");
document.write("		112<\/a>. Area of square and triangle.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p113_elearning_area_triangle_incircle.htm\">Problem ");
document.write("		113<\/a>. Area of triangle, incircle, ");
document.write("		excircle.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p114_elearning_area_triangle_incircle_tangent.htm\">Problem ");
document.write("		114<\/a>.<br>");
document.write("					Area of triangle, incircle, ");
document.write("		excircle.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p115_elearning_area_triangle_excircle_tangent.htm\">Problem 115<\/a>");
document.write("					. Area of&nbsp;triangle, excircles, tangent.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p116_elearning_area_triangle_excircle_tangent.htm\">Problem ");
document.write("		116<\/a>. Area of&nbsp;triangle, excircles, tangent.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p117_elearning_area_triangle_incircle_excircle.htm\">Problem ");
document.write("		117<\/a>");
document.write("		. Area of triangle, incenter, excircles, tangent.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p118_elearning_area_triangle_incircle_excircle.htm\">Problem ");
document.write("		118<\/a>. Area of triangle, incenter, excenter, tangent<br>");
document.write("");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p119_elearning_area_triangle_incenter_tangent.htm\">Problem 119<\/a>");
document.write("					. Area of triangle, incenter, excircle, tangent.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p120_elearning_area_triangle_incenter_excircles.htm\">Problem 120<\/a>");
document.write("					.<br>");
document.write("					Area of triangle, incenter, excircles, tangent.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p121_triangle_similarity.htm\">Problem 121<\/a>. Similarity and Area ");
document.write("		of&nbsp;triangle<b>, <\/b>Trisection of Sides.<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p122_marion_walter_theorem_proof_area.htm\">");
document.write("					Problem 122<\/a>. Marion ");
document.write("					Walter's Theorem. Area of triangle and Hexagon, Trisection ");
document.write("					of Sides.<br>");
document.write("		<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p123_area_triangle_similarity.htm\">Problem 123<\/a>. ");
document.write("					Area of triangle, Similarity, Trisection of Sides.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p124_area_triangle_similarity.htm\">Problem 124<\/a>. ");
document.write("					Area of triangle, Similarity, Trisection of Sides.<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p125_area_triangle_star.htm\">Problem 125<\/a>.<br>");
document.write("					Area of Triangle, Star, Trisection of Sides.&nbsp;<br>");
document.write("		<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p126_incenter_triangle_angle_bisector.htm\">");
document.write("					Problem 126<\/a>. Incenter ");
document.write("					of a Triangle, Angle Bisector, Proportions.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p127_centroid_incenter_triangle_parallel.htm\">");
document.write("					Problem 127<\/a>. Centroid ");
document.write("					and Incenter of a Triangle, Parallel, Proportions. <br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p128_incenter_angle_bisector_proportion.htm\">");
document.write("					Problem 128<\/a>. <br>");
document.write("					Incenter of a Triangle, Angle Bisectors, ");
document.write("					Sum of Ratios.<br>");
document.write("										");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p129_triangle_cevian_sum_ratios.htm\">");
document.write("					Problem 129<\/a>. Triangle, Concurrent Cevians, Sum of ");
document.write("					Ratios.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p130_triangle_cevian_sum_ratios.htm\">");
document.write("					Problem 130<\/a>. Triangle, Concurrent Cevians, Sum of ");
document.write("					Ratios.<br>");
document.write("										");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p131_van_aubel_cevian_sum_ratios.htm\">");
document.write("					Problem 131<\/a>.<br>");
document.write("					Van Aubel Theorem, Concurrent Cevians, Sum of Ratios.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p132_triangle_60_congruence_midpoint.htm\">");
document.write("					Problem 132<\/a>. ");
document.write("					<br>");
document.write("					Triangle, 60 degree, Orthocenter, Congruence, Midpoint<br>");
document.write("										");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p133_triangle_angle_bisector_collinear.htm\">");
document.write("					Problem 133<\/a>.<br>");
document.write("					Triangle, Angle Bisectors, Collinear Points.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p134_orthic_triangle_altitude_angle_bisector.htm\">");
document.write("					Problem 134<\/a>. ");
document.write("					Orthic ");
document.write("					Triangle, Altitudes, Angle Bisectors, Orthocenter, Incenter.<br>");
document.write("		<br>");
document.write("										");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p135_orthic_triangle_altitude_angle_bisector_geometry.htm\">");
document.write("					Problem 135<\/a>. <br>");
document.write("					Orthic ");
document.write("					Triangle, Altitudes, Perpendicular, Parallel.<br>");
document.write("					<br>");
document.write(" ");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p136_orthic_triangle_altitude_concyclic.htm\">");
document.write("					Problem 136<\/a>.Orthic ");
document.write("					Triangle, Altitudes, Perpendicular, Concyclic Points.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p137_orthic_triangle_altitude_collinear.htm\">");
document.write("					Problem 137<\/a>.Orthic Triangle, Altitudes, Perpendicular, Incircle, ");
document.write("					Collinear Points, Parallelogram.<br>");
document.write(" ");
document.write("					<br>");
document.write(" ");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p138_nagel_theorem_orthic_triangle_circumradius.htm\">");
document.write("					Problem 138<\/a>. Nagel's ");
document.write("					Theorem, Orthic Triangle, Altitudes, Circumradius, ");
document.write("					Perpendicular.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p139_area_orthic_triangle_circumradius.htm\">");
document.write("					Problem 139<\/a>.<br>");
document.write("					Triangle ");
document.write("					Area, Orthic Triangle, Semiperimeter, Circumradius.<br>");
document.write(" ");
document.write("					<br>");
document.write(" ");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p140_triangle_excircle_semiperimeter.htm\">");
document.write("					Problem 140<\/a>. ");
document.write("					<br>");
document.write("					Triangle, Excircle, Tangent, Semiperimeter.<br>");
document.write("										");
document.write("					<\/font><\/font><br>");
document.write("					<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p141_four_triangles_incircle_perimeter.htm\">");
document.write("					Problem 141<\/a>. ");
document.write("					<br>");
document.write("					Triangle, Incircle, Tangent , Parallel, Perimeters.<br>");
document.write(" ");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p142_four_triangles_incircle_areas.htm\">");
document.write("					Problem 142<\/a>. Four ");
document.write("					Triangles, Incircle, Tangent and Parallel to Side, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p143_four_triangles_incircle_circumradius.htm\">");
document.write("					Problem 143<\/a>. Four ");
document.write("					Triangles, Incircle, Tangent and Parallel to Side, ");
document.write("					Circumradii.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p144_four_triangles_incircle_inradii.htm\">");
document.write("					Problem 144<\/a>. <br>");
document.write("					Four ");
document.write("					Triangles, Incircle, Tangent and Parallel to Side, Inradii.");
document.write("		<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p145_four_triangles_inradii_circumradii.htm\">");
document.write("					Problem 145<\/a>. <br>");
document.write("					Four ");
document.write("					Triangles, Incircle, Tangent and Parallel to Side, Incenters, ");
document.write("					Circumcenters.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p146_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 146<\/a>. ");
document.write("					<br>");
document.write("					Varignon's Theorem: Quadrilateral, Midpoints, Parallelogram, ");
document.write("					Area, Perimeter.&nbsp;<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p147_quadrilateral_area_midpoint_triangle.htm\">");
document.write("					Problem 147<\/a>. ");
document.write("					Quadrilateral, Area, Midpoints, Triangle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p148_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 148<\/a>. ");
document.write("					Quadrilateral, Area, Midpoints.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p149_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 149<\/a>.<br>");
document.write("					Quadrilateral, Area, Midpoints.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p150_quadrilateral_area_trisection.htm\">");
document.write("					Problem 150<\/a>.<br>");
document.write("					Quadrilateral, Area, Trisection of Sides.<br>");
document.write(" ");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p151_quadrilateral_area_trisection.htm\">");
document.write("					Problem 151<\/a>.<br>");
document.write("					Quadrilateral, Area, Trisection of Sides.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p152_circumscribed_quadrilateral_diagonal_chord.htm\">");
document.write("					Problem 152<\/a>.<br>");
document.write("					Circumscribed Quadrilateral, Diagonal, Chord, Proportion.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p153_circumscribed_quadrilateral_diagonals_chords.htm\">");
document.write("					Problem 153<\/a>.<br>");
document.write("					Circumscribed Quadrilateral, Diagonals Concurrent with ");
document.write("		Chords.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p154_triangle_inradius_circumradius.htm\">");
document.write("					Problem 154<\/a>.<br>");
document.write("					Triangle, Inradius, Circumradius, Chord.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p155_distance_incenter_circumcenter.htm\">");
document.write("					Problem 155<\/a>.Euler's ");
document.write("					Theorem Distance from the Incenter to the Circumcenter <br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p156_triangle_exradius_circumradius.htm\">");
document.write("					Problem 156<\/a>.<br>");
document.write("					Triangle, Circumradius, Exradius, Chord, Secant line.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p157_distance_circumcenter_excenter.htm\">");
document.write("					Problem 157<\/a>.<br>");
document.write("					Distance ");
document.write("					from the Circumcenter to the Excenter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p158_circumradius_inradii_exradii.htm\">");
document.write("					Problem 158<\/a>.<br>");
document.write("					Relation ");
document.write("					between the Circumradius, Inradius and Exradii of a ");
document.write("					triangle.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p159_distance_circumcenter_incenter_excenter.htm\">");
document.write("					Problem 159<\/a>.<br>");
document.write("					Distances from the Circumcenter to the Incenter and the ");
document.write("					Excenters.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p160_diameter_circumcircle_inradius.htm\">Problem 160<\/a>.<br>");
document.write("					Triangle, Incircle, Incenter, Circumcircle, Circumcenter, ");
document.write("					Inradius.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p161_parallelogram_octagon_area.htm\">");
document.write("					Problem 161<\/a>.<br>");
document.write("					Parallelogram, Midpoints, Octagon, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p162_parallelogram_triangle_area.htm\">");
document.write("					Problem 162<\/a>. ");
document.write("					Parallelogram, Triangles, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p163_trapezoid_triangle_area.htm\">");
document.write("					Problem 163<\/a>.<br>");
document.write("					Trapezoid, Diagonals, Triangles, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p164_parallelogram_triangle_area.htm\">");
document.write("					Problem 164<\/a>.<br>");
document.write("					Parallelogram, Trapezoid, Diagonal, Triangles, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p165_parallelogram_triangle_area.htm\">");
document.write("					Problem 165<\/a>.<br>");
document.write("					Parallelogram, Diagonal, Triangles, Areas.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p166_parallelogram_triangle_area.htm\">");
document.write("					Problem 166<\/a>. ");
document.write("					<br>");
document.write("					Parallelogram, Diagonal, Triangles, Areas.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p167_parallelogram_triangle_area.htm\">");
document.write("					Problem 167<\/a>. ");
document.write("					<br>");
document.write("					Parallelogram, Diagonal, Triangles, Areas.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p168_parallelogram_triangle_pentagon_area.htm\">");
document.write("					Problem 168<\/a>. ");
document.write("					<br>");
document.write("					Parallelogram, Diagonal, Triangles, Pentagon, Areas.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p169_parallelogram_triangle_pentagon_area.htm\">");
document.write("					Problem 169<\/a>. ");
document.write("					<br>");
document.write("					Parallelogram, Interior and Exterior Points, Diagonals, ");
document.write("					Pentagon, Triangles, Areas<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p170_trapezoid_triangle_area.htm\">");
document.write("					Problem 170<\/a>. ");
document.write("					Trapezoid, Midpoint, Triangle, Area.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p171_trapezoid_triangle_area_midpoint.htm\">");
document.write("					Problem 171<\/a>. ");
document.write("					Trapezoid, Midpoints, Triangles, Areas.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p172_trapezoid_quadrilaterals_area_midpoint.htm\">");
document.write("					Problem 172<\/a>. ");
document.write("					Trapezoid, Midpoints, Quadrilaterals, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p173_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 173<\/a>. ");
document.write("					Quadrilateral with Midpoints, Triangles, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p174_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 174<\/a>. ");
document.write("					Quadrilateral with Midpoints, Triangles, Areas.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p175_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 175<\/a>. ");
document.write("					Quadrilateral with Midpoints, Areas.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p176_quadrilateral_area_midpoint.htm\">");
document.write("					Problem 176<\/a>. ");
document.write("					<br>");
document.write("					Quadrilateral with Midpoints, Triangles, Areas<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p177_parallelogram_area_midpoint.htm\">");
document.write("					Problem 177<\/a>. ");
document.write("					<br>");
document.write("					Parallelogram with Midpoints, Triangles, Areas&nbsp;<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p178_quadrilateral_area_trisection_sides.htm\">");
document.write("					Problem 178<\/a>. ");
document.write("					<br>");
document.write("		Quadrilateral, Trisection of sides, Area.<br>");
document.write("					");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p179_rhombus_square_diagonal_angle.htm\">");
document.write("					Problem 179<\/a>. <br>");
document.write("		Rhombus, ");
document.write("					Square, Diagonal, Angle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p180_circle_triangle_quadrilateral_area.htm\">");
document.write("					Problem 180<\/a>. ");
document.write("					<br>");
document.write("		Circles ");
document.write("					Tangent Externally, Common External Tangents, Areas.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p181_circular_sector_90_angle.htm\">");
document.write("					Problem 181<\/a>. <br>");
document.write("					Circular ");
document.write("					Sector of 90 degrees, find an angle.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p182_overlapping_circles_angle.htm\">");
document.write("					Problem 182<\/a>. ");
document.write("					Overlapping Circles, Find an angle.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p183_right_triangle_hypotenuse.htm\">");
document.write("					Problem 183<\/a>. <br>");
document.write("					Right ");
document.write("					Triangle, Hypotenuse Trisection Points, Squares of the ");
document.write("					Distances.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p184_triangle_angles_problem.htm\">");
document.write("					Problem 184<\/a>. <br>");
document.write("					Triangle ");
document.write("					and Angles.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p185_trapezoid_angles_problem.htm\">");
document.write("					Problem 185<\/a>. ");
document.write("					<br>");
document.write("					Trapezoid, Triangles and Angles");
document.write("					");
document.write("					<br>");
document.write("					<br>");
document.write("					");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p186_right_triangle_circle.htm\">");
document.write("					Problem 186<\/a>. <br>");
document.write("					Right Triangle, Altitude, Incenters, Circles.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p187_right_triangle_circle.htm\">");
document.write("					Problem 187<\/a>. <br>");
document.write("					Right ");
document.write("					Triangle, Altitude, Incenters, Circles, Angles.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p188_square_45_degrees_problem.htm\">");
document.write("					Problem 188<\/a>. <br>");
document.write("					Square, ");
document.write("					Diagonal, 45 Degrees Angle.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p189_square_fact.htm\">");
document.write("					Problem 189<\/a>. <br>");
document.write("					Squares, ");
document.write("					Distances.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p190_tangent_circle_diameter_perpendicular.htm\">");
document.write("					Problem 190<\/a>. <br>");
document.write("					Tangent ");
document.write("					circles, Tangent chord, Perpendicular, Distance.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p191_triangle_altitude_square_area.htm\">");
document.write("					Problem 191<\/a>. ");
document.write("					<br>");
document.write("					Triangle, Altitudes, Orthocenter, Squares, Areas.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p192_circle_diameter_chord_area.htm\">");
document.write("					Problem 192<\/a>. <br>");
document.write("					Circle, ");
document.write("					Diameter, Chord, Perpendicular, Triangle, Area. <br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p193_area_of_a_triangle_semiperimeter_inradius.htm\">");
document.write("					Problem 193<\/a>. <br>");
document.write("		Area of ");
document.write("					a Triangle, Semiperimeter, Inradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p194_area_of_a_triangle_semiperimeter_exradius.htm\">");
document.write("					Problem 194<\/a>. <br>");
document.write("		Area of ");
document.write("					a Triangle, Semiperimeter, Exradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p195_area_of_a_triangle_inradius_exradius.htm\">");
document.write("					Problem 195<\/a>. <br>");
document.write("		Area of ");
document.write("					a Triangle, Inradius, Exradii. <br>");
document.write("		<br>");
document.write("										");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p196_triangle_inradius_exradius_formula.htm\">");
document.write("					Problem 196<\/a>. ");
document.write("					Triangle, Inradius and Exradii Formula.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p197_triangle_area_side_inradius_exradius.htm\">");
document.write("					Problem 197<\/a>. <br>");
document.write("					Area of ");
document.write("					a Triangle, Side, Inradius, and Exradius.<br>");
document.write("										");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p198_triangle_quadrilateral_circle_angle.htm\">");
document.write("					Problem 198<\/a>.<br>");
document.write("					Triangle, Quadrilateral, Angles.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p199_triangle_altitude_angles.htm\">");
document.write("					Problem 199<\/a>.<br>");
document.write("					Triangle, Quadrilateral, Angles.<br>");
document.write("										");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p200_right_triangle_tangent.htm\">");
document.write("					Problem 200<\/a>.<br>");
document.write("					RightTriangle, Incircle, Excircles, Points ");
document.write("					of Tangency, Inradius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p201_right_triangle_tangent_excircle.htm\">");
document.write("					Problem 20<\/a><a href=\"http:\/\/www.gogeometry.com\/problem\/p200_right_triangle_tangent.htm\">1<\/a>.<br>");
document.write("					Right Triangle, Excircles, Points of Tangency, Exradius, ");
document.write("					Semiperimeter.<br>");
document.write("										");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p202_right_triangle_tangent_excircles.htm\">");
document.write("					Problem 202<\/a>.");
document.write("					<br>");
document.write("		Right Triangle, Incirle, Excircles ");
document.write("					relatives to catheti, Points of Tangency, Exradius, ");
document.write("					Semiperimeter.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p203_right_triangle_excircles_hypotenuse.htm\">");
document.write("					Problem 203<\/a>.<br>");
document.write("					Right Triangle, Excircles, Exradii, ");
document.write("					Hypotenuse.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p204_right_triangle_inradius_exradii.htm\">");
document.write("					Problem 204<\/a>.<br>");
document.write("					Right Triangle, Incircle, Excircles, ");
document.write("					Inradius, Exradii.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p205_right_triangle_area_exradii.htm\">");
document.write("					Problem 205<\/a>. <br>");
document.write("					Right Triangle Area, Exradii relatives to ");
document.write("					legs or catheti.<br>");
document.write("										");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p205_right_triangle_area_exradii.htm\">");
document.write("					Problem 206<\/a>.<br>");
document.write("					Area of a Right Triangle, Inradius, ");
document.write("					andExradius relative to the hypotenuse.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p207_right_triangle_hypotenuse.htm\">");
document.write("					Problem 207<\/a>.<br>");
document.write("					Right Triangle, Hypotenuse, Inradius, ");
document.write("					Exradius relative to the hypotenuse.<br>");
document.write("										");
document.write("					&nbsp;<\/font><\/td>");
document.write("					<td valign=\"top\" width=\"25%\">");
document.write("					");
document.write("					<p style=\"margin-top: 0px; margin-bottom: 0px\">");
document.write("					<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p208_triangle_excircles_angles.htm\">");
document.write("					Problem 208<\/a>.<br>");
document.write("					Triangle, Excircles, Angles, 360 degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p209_triangle_incircles_inradius.htm\">");
document.write("					Problem 209<\/a>.<br>");
document.write("					Triangle, Incircles, Inradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p210_triangle_angles_auxiliary_line.htm\">");
document.write("					Problem 210<\/a>.<br>");
document.write("					Triangle, Angles, Auxiliary Lines.");
document.write("					<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p211_triangle_60_equilateral_area.htm\">");
document.write("					Problem 211<\/a>. <br>");
document.write("					60 Degree Triangle, Equilateral triangles, ");
document.write("					Areas.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p212_triangle_120_equilateral_area.htm\">");
document.write("					Problem 212<\/a>. <br>");
document.write("					120 Degree Triangle, Equilateral triangles, ");
document.write("					Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p213_triangle_inradius_common_tangents.htm\">");
document.write("					Problem 213<\/a>. <br>");
document.write("					Triangle, Incircle, Inradius, Semicircles, ");
document.write("					Common Tangents.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p214_quadrilateral_angle_bisector.htm\">");
document.write("					Problem 214<\/a>. <br>");
document.write("					Quadrilateral and Angle Bisectors.&nbsp;<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p215_quadrilateral_angle_bisector_cyclic.htm\">");
document.write("					Problem 215<\/a>. Quadrilateral, Angle Bisectors, and Cyclic ");
document.write("					Quadrilateral.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p216_quadrilateral_angle_bisector_concurrency.htm\">");
document.write("					Problem 216<\/a>. Quadrilateral, Angle Bisectors, and ");
document.write("					Concurrency.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p217_right_triangle_altitude_projection_congruence.htm\">");
document.write("					Problem 217<\/a>. Right triangle, Altitude and Projections.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p218_right_triangle_altitude_perpendicular.htm\">");
document.write("					Problem 218<\/a>. <br>");
document.write("					Right triangle, Altitude and Projections.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p219_rhombus_perpendicular_arithmetic_mean.htm\">");
document.write("					Problem 219<\/a>. <br>");
document.write("					Rhombus, Perpendiculars, Arithmetic Mean.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p220_right_triangle_altitude_inradius_angle_bisector_distance.htm\">");
document.write("					Problem 220<\/a>. <br>");
document.write("					Right Triangle, Altitude, Angle Bisector, ");
document.write("					Distance, Arithmetic Mean.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p221_viviani_theorem_equilateral_triangle.htm\">");
document.write("					Problem 221<\/a>. <br>");
document.write("					Viviani's theorem, Equilateral triangle, ");
document.write("					Interior point, Altitude, Distances.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p222_viviani_theorem_equilateral_triangle_exterior.htm\">");
document.write("					Problem 222<\/a>. Viviani's theorem, Equilateral triangle, ");
document.write("					Exterior point, Altitude, Distances.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p223_viviani_theorem_isosceles_triangle.htm\">");
document.write("					Problem 223<\/a>. <br>");
document.write("					Viviani's theorem, Isosceles triangle, ");
document.write("					Altitude, Distances.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p224_viviani_theorem_isosceles_triangle.htm\">");
document.write("					Problem 224<\/a>. <br>");
document.write("					Viviani's theorem, Isosceles triangle, ");
document.write("					Altitude, Distances, Point on the extension of the base.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p225_viviani_theorem_regular_polygon.htm\">");
document.write("					Problem 225<\/a>. <br>");
document.write("					Viviani's Theorem Extension, Regular ");
document.write("					Polygon, Apothem, Distance.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/geometria\/index.html\">");
document.write("					Problemas Propuestos de Geometria en Espanol<\/a>.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p226_triangle_centroid_perpendicular.htm\">");
document.write("					Problem 226<\/a>. Triangle, Centroid, Perpendicular lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p227_triangle_centroid_perpendicular.htm\">");
document.write("					Problem 227<\/a>. Triangle, Centroid, Exterior line, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p228_triangle_midpoint_perpendicular.htm\">");
document.write("					Problem 228<\/a>. <br>");
document.write("					Triangle, Midpoints, Exterior line, ");
document.write("					Perpendiculars lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p229_triangle_centroid_transversal_perpendicular.htm\">");
document.write("					Problem 229<\/a>. <br>");
document.write("					Triangle, Centroid, Transversal, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p230_triangle_midpoint_transversal_perpendicular.htm\">");
document.write("					Problem 230<\/a>. Triangle, Midpoints, Transversal, ");
document.write("					Perpendicular lines.<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p231_triangle_midpoint_transversal_perpendicular.htm\">");
document.write("					Problem 231<\/a>. <br>");
document.write("					Triangle, Midpoints, Transversal, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p232_parallelogram_perpendicular_lines.htm\">");
document.write("					Problem 232<\/a>. <br>");
document.write("					Parallelogram, Line through a vertex, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p233_parallelogram_perpendicular_lines.htm\">");
document.write("					Problem 233<\/a>. <br>");
document.write("					Parallelogram, Exterior line, Perpendicular ");
document.write("					lines.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p234_parallelogram_vertex_perpendicular_lines.htm\">");
document.write("					Problem 234<\/a>. <br>");
document.write("					Parallelogram, Line through a vertex, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p235_parallelogram_transversal_perpendicular_lines.htm\">");
document.write("					Problem 235<\/a>. <br>");
document.write("					Parallelogram, Transversal line, ");
document.write("					Perpendicular lines.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p236_quadrilateral_midpoint_exterior_line_perpendicular.htm\">");
document.write("					Problem 236<\/a>.");
document.write("					<br>");
document.write("					Quadrilateral, Midpoints, Exterior line, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p237_quadrilateral_midpoint_exterior_line_perpendicular.htm\">");
document.write("					Problem 237<\/a>.");
document.write("					<br>");
document.write("					Quadrilateral, Midpoints, Exterior line, ");
document.write("					Perpendicular lines.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p238_square_midpoints_congruence.htm\">");
document.write("					Problem 238<\/a>. ");
document.write("					<br>");
document.write("					Square, Midpoints, Lines, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p239_square_midpoints_congruence_pythagoras.htm\">");
document.write("					Problem 239<\/a>. <br>");
document.write("					Square, Midpoints, Lines, Congruence, ");
document.write("					Pythagoras.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p240_triangle_equilateral_parallelogram.htm\">");
document.write("					Problem 240<\/a>.<br>");
document.write("					Triangle with Equilateral triangles, ");
document.write("					Parallelogram. <br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p241_triangle_equilateral_congruence_sas.htm\">");
document.write("					Problem 241<\/a>.<br>");
document.write("					Triangle with Equilateral triangles, Congruence.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p242_triangle_equilateral_parallelogram.htm\">");
document.write("					Problem 242<\/a>. <br>");
document.write("					Triangle with Equilateral triangles, Parallelogram. <br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p243_triangle_equilateral_parallelograms.htm\">");
document.write("					Problem 243<\/a>.<br>");
document.write("					Triangle with Equilateral triangles, Parallelogram. <br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p244_square_centers_diagonal_vertex.htm\">");
document.write("					Problem 244<\/a>. <br>");
document.write("					Square, Diagonals, Centers, Distance. <br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p245_parallelogram_equilateral_triangle_congruence.htm\">");
document.write("					Problem 245<\/a>. <br>");
document.write("					Parallelogram with Equilateral triangles.");
document.write("					<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p246_napoleon_theorem_external_equilateral_triangle.htm\">");
document.write("					Problem 246<\/a>.<br>");
document.write("					Napoleon's Theorem I. External Equilateral triangles. Outer ");
document.write("					Napoleon triangle. <br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p247_napoleon_theorem_inner_equilateral_triangle.htm\">");
document.write("					Problem 247<\/a>. <br>");
document.write("					Napoleon's Theorem II. Internal Equilateral triangles. Inner ");
document.write("					Napoleon triangle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p248_napoleon_theorem_iii_area_inner_outer.htm\">");
document.write("					Problem 248<\/a>. <br>");
document.write("					Napoleon's Theorem III. Inner and outer Napoleon triangles, ");
document.write("					Area.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p249_triangle_sides_medians_squares.htm\">");
document.write("					Problem 249<\/a>.<br>");
document.write("					Triangle sides, medians, squares.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p250_quadrilateral_diagonals_midpoints_squares.htm\">");
document.write("					Problem 250<\/a>. ");
document.write("					<br>");
document.write("					Quadrilateral, sides, diagonals, midpoints, squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p251_parallelogram_diagonal_square_area.htm\">");
document.write("					Problem 251<\/a>. <br>");
document.write("					Parallelogram, sides, diagonals, squares, areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p252_rectangle_triangle_square_area.htm\">");
document.write("					Problem 252<\/a>. <br>");
document.write("					Rectangle, isosceles right triangle, square, area.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p253_triangle_centroid_squares.htm\">");
document.write("					Problem 253<\/a>. <br>");
document.write("					Triangle, Centroid, Vertices, Distances, Squares.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p254_triangle_centroid_squares_interior_point.htm\">");
document.write("					Problem 254<\/a>. <br>");
document.write("					Triangle, Centroid, Vertices, a Point, Distances, Squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p255_triangle_centroid_squares_point_vertex.htm\">");
document.write("					Problem 255<\/a>. <br>");
document.write("					Triangle, Centroid, Vertices, a Point, Distances, Squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p256_equilateral_triangle_circumcircle_distance_vertex.htm\">");
document.write("					Problem 256<\/a>. <br>");
document.write("					Equilateral Triangle, Circumcircle, Point, ");
document.write("					Vertices, Distances.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p257_equilateral_triangle_circumcircle_distance_sides.htm\">");
document.write("					Problem 257<\/a>. <br>");
document.write("					Equilateral Triangle, Circumcircle, Point, Vertices, Side, ");
document.write("					Distances, Squares.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p258_equilateral_triangle_incircle_distance_square.htm\">");
document.write("					Problem 258<\/a>. <br>");
document.write("					Equilateral Triangle, Circumcircle, Point, Vertices, Side, ");
document.write("					Distances, Squares. ");
document.write("					");
document.write("					<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p259_equilateral_triangle_incircle_distance_square.htm\">");
document.write("					Problem 259<\/a>. <br>");
document.write("					Equilateral Triangle, Incircle, Tangency Points, Side, ");
document.write("					Distances, Squares.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p260_equilateral_triangle_incircle_distance_square.htm\">");
document.write("					Problem 260<\/a>. <br>");
document.write("					Equilateral Triangle, Incircle, Tangency Points, Vertices, ");
document.write("					Distances, Squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p261_regular_pentagon_inscribed_circle_distance.htm\">");
document.write("					Problem 261<\/a>. <br>");
document.write("					Regular Pentagon inscribed in a circle, sum of distances.");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p262_regular_hexagon_inscribed_circle_distance.htm\">");
document.write("					Problem 262<\/a>. <br>");
document.write("					<br>");
document.write("					Regular Hexagon inscribed in a circle, sum of distances.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p263_triangle_median_orthogonal_projection.htm\">");
document.write("					Problem 263<\/a>. <br>");
document.write("					Triangle, Median, Altitude, Orthogonal Projection, Sides.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p264_right_triangle_leg_projection_hypotenuse.htm\">");
document.write("					Problem 264<\/a>. <br>");
document.write("					Right Triangle, Altitude, Leg projection, Hypotenuse, ");
document.write("					Similarity, Geometric mean.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p265_pythagorean_theorem_right_triangle.htm\">");
document.write("					Problem 265<\/a>.<br>");
document.write("					Right Triangle, Pythagorean Theorem.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p266_right_triangle_altitude_geometric_mean.htm\">");
document.write("					Problem 266<\/a>. <br>");
document.write("					Right Triangle, Altitude, Geometric Mean.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p267_right_triangle_catheti_product.htm\">");
document.write("					Problem 267<\/a>.");
document.write("					<br>");
document.write("					Right Triangle, Product of Catheti.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p268_right_triangle_catheti_altitude_hypotenuse_square.htm\">");
document.write("					Problem 268<\/a>.Right Triangle, Catheti and Altitude.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p269_right_triangle_altitude_orthogonal_projection.htm\">");
document.write("					Problem 269<\/a>. <br>");
document.write("					Right Triangle, Altitude, Perpendicular, Projection.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p270_tangent_circles_fractional_exponent.htm\">");
document.write("					Problem 270<\/a>. ");
document.write("					Tangent Circles, Common external tangent, Fractional ");
document.write("					exponents.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p271_tangent_circles_cube_common_external_tangent.htm\">");
document.write("					Problem 271<\/a>. <br>");
document.write("					Tangent Circles, the Cube of the Common external tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p272_tangent_circles_cube_common_external_tangent.htm\">");
document.write("					Problem 272<\/a>. <br>");
document.write("					Tangent Circles, the Cube of the Common external tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p273_triangle_perpendicular_squares_areas.htm\">");
document.write("					Problem 273<\/a>. <br>");
document.write("					Triangle, Perpendiculars, Area of Squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p274_isosceles_triangle_80_80_20_angles.htm\">");
document.write("					Problem 274<\/a>. <br>");
document.write("					Isosceles Triangle, 80-80-20, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p275_right_triangle_sagitta_inradius.htm\">");
document.write("					Problem 275<\/a>. <br>");
document.write("					Right Triangle, Circumcircle, Sagitta, Inradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p276_square_circle_90_degree_arc.htm\">");
document.write("					Problem 276<\/a>. <br>");
document.write("					Square, 90 degree Arcs, Circle, Radius.<br>");
document.write("					<br>");
document.write("										<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p277_tangent_circle_common_external_tangent.htm\">");
document.write("					Problem 277<\/a>. <br>");
document.write("					Tangent Circles, Common External Tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p278_tangent_circle_common_external_tangent_chord.htm\">");
document.write("					Problem 278<\/a>. <br>");
document.write("					Tangent Circles, Common External Tangent, Chord.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p279_tangent_circle_common_external_tangent_chord_inradius.htm\">");
document.write("					Problem 279<\/a>. ");
document.write("					<br>");
document.write("					Tangent Circles, Common External Tangent, Chords, Inradius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p280_quadrilateral_perpendicular_squares_areas.htm\">");
document.write("					Problem 280<\/a>. <br>");
document.write("					Quadrilateral, Perpendiculars, Area of Squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p281_triangle_angles_interior_point_30.htm\">");
document.write("					Problem 281<\/a>. <br>");
document.write("					Triangles, Angles, Isosceles, Equilateral.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p282_right_triangle_cevian_angles_congruence.htm\">");
document.write("					Problem 282<\/a>. <br>");
document.write("					Right Triangle, Cevian, Angles, Perpendicular, Congruence.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p283_circular_sector_semicircle_circle_radius.htm\">");
document.write("					Problem 283.<\/a>");
document.write("					<br>");
document.write("					Circular Sector 90 degrees, Semicircle, Circle inscribed, Radius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p284_circular_sector_semicircle_tangent_radius.htm\">");
document.write("					Problem 284.<\/a><br>");
document.write("					Circular Sector 90 degrees, Semicircles, ");
document.write("					Tangent, Radius.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p285_circular_sector_semicircle_circle_tangent_radius.htm\">");
document.write("					Problem 285<\/a>.<br>");
document.write("					Circular Sector 90 degrees, Semicircles, ");
document.write("					Circle, Tangent, Radius.<br>");
document.write("					<br>");
document.write("					");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p286_octagon_square_midpoint.htm\">Problem 286<\/a>.<br>");
document.write("					Square, Midpoints, Octagon.<br>");
document.write("					<br>");
document.write("				");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p287_regular_octagon_diagonal.htm\">Problem 287<\/a>.<br>");
document.write("					Regular Octagon, Diagonals.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p288_circles_tangent_radius_harmonic_mean.htm\">");
document.write("					Problem 288<\/a>.<br>");
document.write("					Tangent circles, Harmonic Mean, Radius, Diameter.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p289_tangent_circles_radius_geometry.htm\">");
document.write("					Problem 289<\/a>. <br>");
document.write("					Tangent circles, Radius, ");
document.write("					Perpendicular, Tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p290_tangent_circles_radius_geometry.htm\">Problem 290<\/a>.");
document.write("					Internally Tangent circles, Radius, Perpendicular, Tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p291_triangle_circle_perpendicular_circumradius.htm\">Problem 291<\/a>.<br>");
document.write("					Triangle, Circle, Circumradius, Perpendicular.<br>");
document.write("					<br>");
document.write("		");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p292_triangle_parallels_congruence.htm\">Problem ");
document.write("					292<\/a>. <br>");
document.write("					Triangle, Parallel, Congruence, Similarity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p293_cyclic_quadrilateral_rectangle_triangle_area.htm\">Problem 293<\/a>.<br>");
document.write("		Inscribed Quadrilateral, Perpendicular, Rectangle, Isosceles Right triangle, Area, Similarity.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p294_triangle_excenter_circle_diameter.htm\">");
document.write("					Problem 294<\/a>.<br>");
document.write("					Right triangle, Circumcenter, Excenter, Hypotenuse.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p295_archimedes_twins_harmonic_mean_radius.htm\">");
document.write("					Problem 295<\/a>.<br>");
document.write("					Archimedean Twin Circles, Arbelos, Semicircles, Harmonic ");
document.write("					Mean, Radii, Perpendicular<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p296_circles_chord_perpendicular_radius.htm\">");
document.write("					Problem 296<\/a>.<br>");
document.write("					Intersecting Circles, Chord, Radius, Angle, Perpendicular.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p297_circles_chord_perpendicular_radius.htm\">");
document.write("					Problem 297<\/a>.<br>");
document.write("					Intersecting Circles, Chord, Secant, Radius, Angle, ");
document.write("					Perpendicular.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p298_circles_congruence_chord_midpoint.htm\">");
document.write("					Problem 298<\/a>.<br>");
document.write("					Intersecting Circles, Chord, Secant, Midpoint, Congruence.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p299_circles_congruence_chord_midpoint_angle.htm\">");
document.write("					Problem 299<\/a>.<br>");
document.write("					Intersecting Circles, Chord, Secant, Midpoint, Congruence<br>");
document.write("					");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p300_circle_equal_tangent_secant_square.htm\">");
document.write("					Problem 300<\/a>.<br>");
document.write("					Tangent to a circle, Secants, Square.<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p301_circle_equal_tangent_secant_square.htm\">Problem 301<\/a>.<br>");
document.write("		Tangents to a circle, Secants, Square<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p302_triangle_60_degree_angle_bisector.htm\">");
document.write("					Problem 302<\/a>.");
document.write("		Triangle, Angle bisector of 60 degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p303_triangle_90_degree_angle_bisector.htm\">");
document.write("					Problem 303<\/a>.<br>");
document.write("		Triangle, Angle bisector of 90 degrees.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p304_triangle_120_degree_angle_bisector.htm\">");
document.write("					Problem 304<\/a>.<br>");
document.write("		Triangle, Angle bisector of 120 degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p305_square_triangle_angle_side.htm\">");
document.write("					Problem 305<\/a>.<br>");
document.write("					Square, Triangles, Angles, Sides.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p306_square_triangle_angle_side.htm\">");
document.write("					Problem 306<\/a>.<br>");
document.write("		Square, Triangles, Angles, Sides.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p307_nonagon_midpoint_angle_side.htm\">Problem 307<\/a>.");
document.write("		Regular Nonagon or Enneagon, Midpoints, Side, Arc, Angle.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p308_nonagon_midpoint_arc_side_angle.htm\">");
document.write("					Problem 308<\/a>.<br>");
document.write("		Regular Nonagon or Enneagon, Midpoints, Side, Arc, Angle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p309_nonagon_diagonal_side_sum.htm\">");
document.write("					Problem 309<\/a>.<br>");
document.write("		Regular Nonagon or Enneagon, Diagonals, Side.<br>");
document.write("				");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p310_semicircle_circle_tangent_angle.htm\">Problem ");
document.write("					310<\/a>.<br>");
document.write("		Circle Inscribed in a Semicircle, 45 Degrees Angle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p311_circle_inscribed_semicircle_chord.htm\">");
document.write("					Problem 311<\/a>.<br>");
document.write("		Circle Inscribed in a Semicircle, Chord, Diameter.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p312_cyclic_quadrilateral_tangent_secant.htm\">");
document.write("					Problem 312<\/a>.<br>");
document.write("		Cyclic quadrilateral, Side extensions, Tangents.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p313_tangent_chord_perpendicular_geometric_mean.htm\">");
document.write("					Problem 313<\/a>.<br>");
document.write("		Circle, Chord, Tangent, Perpendicular, Geometric Mean.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p314_tangent_circles_line_geometric_mean.htm\">");
document.write("					Problem 314<\/a>.<br>");
document.write("		Tangent circles, Common external tangent line, Geometric Mean.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p315_tangent_circles_inscribed_angle_geometric_mean.htm\">");
document.write("					Problem 315<\/a>.<br>");
document.write("					Three");
document.write("		Tangent circles, Common external tangent line, Geometric Mean.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p316_circular_segment_inscribed_squares.htm\">");
document.write("					Problem 316<\/a>.<br>");
document.write("		Circular segments and Inscribed Squares.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p317_right_triangle_inscribed_squares.htm\">");
document.write("					Problem 317<\/a>.<br>");
document.write("		Right triangle and Inscribed Squares.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p318_triangle_altitudes_collinear_points.htm\">");
document.write("					Problem 318<\/a>.<br>");
document.write("		A Scalene triangle, Altitudes, Collinear points.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p319_triangle_altitudes_projections_collinear_points.htm\">");
document.write("					Problem 319<\/a>.<br>");
document.write("		Triangle, Altitudes, Perpendiculars, Collinear points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p320_triangle_incenter_excenter_circumcircle_collinear_points.htm\">");
document.write("					Problem 320<\/a>.<br>");
document.write("		Triangle, Circumcircle, Incenter, Excenter, Collinear points.<br>");
document.write("				");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p321_triangle_incenter_excircle_altitude_collinear_points.htm\">");
document.write("					Problem 321<\/a>.<br>");
document.write("		Triangle, Incenter, Excircle, Midpoint of the Altitude, Collinearity.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p322_area_triangle_square_inscribed_circle.htm\">");
document.write("					Problem 322<\/a>.<br>");
document.write("		Square, Inscribed circle, Tangent, Triangle area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p323_triangle_incenter_circumcenter_equal_circles_collinear.htm\">");
document.write("					Problem 323<\/a>.<br>");
document.write("		Triangle, Incenter, Circumcenter, Equal circles, Collinearity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p324_quadrilateral_perpendicular_diagonals_concurrent.htm\">");
document.write("					Problem 324<\/a>.<br>");
document.write("		Quadrilateral with perpendicular diagonals, Concurrence.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p325_isosceles_triangle_altitude_circle.htm\">");
document.write("					Problem 325<\/a>.<br>");
document.write("		Isosceles triangle, Altitude, Cevian, Incircle, Excircle.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p326_equilateral_triangle_semicircle_congruence.htm\">");
document.write("					Problem 326<\/a>.<br>");
document.write("					Equilateral triangle, Semicircle, Equal arcs.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p327_right_triangle_area_incircle_circumcircle.htm\">Problem 327<\/a>.<br>");
document.write("					Right triangle Area, Incircle, Circumcircle, Square.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p328_triangle_incircle_parallel_midpoint.htm\">");
document.write("					Problem 328<\/a>.<br>");
document.write("		Triangle, Incircle, Tangency Points, Parallel, Midpoint.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p329_triangle_altitude_circle_diameter_cyclic.htm\">");
document.write("					Problem 329<\/a>.<br>");
document.write("		Triangle, Altitudes, Circle, Diameter, Concyclic points.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p330_cyclic_quadrilateral_perpendicular_diagonal_area.htm\">");
document.write("					Problem 330<\/a>. <br>");
document.write("		Cyclic quadrilateral, Perpendicular diagonals, Area, Circumcenter.&nbsp;<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p331_square_inscribed_circle.htm\">Problem 331<\/a>.<br>");
document.write("		Square, Point on the Inscribed Circle, Tangency Points.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p332_cyclic_quadrilateral_ratio_diagonals.htm\">");
document.write("					Problem 332<\/a>.<br>");
document.write("		Cyclic quadrilateral, Ratio of diagonals, Similarity.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p333_circle_inscribed_semicircle_perpendicular.htm\">");
document.write("					Problem 333<\/a>.<br>");
document.write("		Circle inscribed in a semicircle, Perpendicular to the common tangent.&nbsp;<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p334_cyclic_quadrilateral_diagonal_perpendicular.htm\">");
document.write("					Problem 334<\/a>.<br>");
document.write("					Cyclic Quadrilateral, Perpendiculars to Diagonals.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p335_cyclic_quadrilateral_perpendicular_to_sides.htm\">");
document.write("					Problem 335<\/a>.<br>");
document.write("					Cyclic Quadrilateral, Perpendiculars to Sides.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p336_tangent_circles_line_square.htm\">");
document.write("					Problem 336<\/a>.<br>");
document.write("					Two equal circles, a Common Tangent and a Square.<br>");
document.write("					");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p337_cyclic_quadrilateral_trapezoid_parallel.htm\">");
document.write("					Problem 337<\/a>.");
document.write("					Isosceles Trapezoid, Angle bisector, Parallel, Concyclic ");
document.write("					points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p338_cyclic_quadrilateral_tangent_circle_exterior_angle_bisector.htm\">");
document.write("					Problem 338<\/a>.<br>");
document.write("					Triangle, Circumcircle, Inscribed Circle, Exterior angle ");
document.write("					bisector, Concyclic points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p339_triangle_angle_bisector_perpendicular_sides_sum.htm\">");
document.write("					Problem 339<\/a>.<br>");
document.write("					Triangle, Angle Bisectors, Perpendiculars, Distances. ");
document.write("					Interior Point.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p340_triangle_angle_bisector_perpendicular_sides_distance.htm\">");
document.write("					Problem 340<\/a>.<br>");
document.write("					Triangle, Angle Bisectors, Perpendiculars, Distances. ");
document.write("					Exterior Point.&nbsp;<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p341_triangle_incircle_semiperimeter.htm\">Problem ");
document.write("					341<\/a>.<br>");
document.write("		Triangle, Inscribed circle, Tangent, Semiperimeter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p342_circumscribed_pentagon_tangent_semiperimeter.htm\">");
document.write("					Problem 342<\/a>.<br>");
document.write("		Pentagon, Inscribed circle, Tangent, Semiperimeter.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p343_circumscribed_hexagon_tangent_semiperimeter.htm\">");
document.write("					Problem 343<\/a>.<br>");
document.write("		Hexagon, Inscribed circle, Tangent, Semiperimeter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p344_quadrilateral_sides_extension_tangent_circle_semiperimeter.htm\">");
document.write("					Problem 344<\/a>.<br>");
document.write("		Quadrilateral, Extension of sides, Circle, Tangent, Semiperimeter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p345_circles_tangent_hexagon_semiperimeter.htm\">");
document.write("					Problem 345<\/a>.<br>");
document.write("		Equal circles, Tangents, Concurrent lines, Hexagon, Semiperimeter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p346_circles_tangent_hexagon_semiperimeter.htm\">");
document.write("					Problem 346<\/a>.<br>");
document.write("		Equal circles, Tangents, Hexagon, Semiperimeter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p347_triangle_altitude_perpendicular_concyclic.htm\">");
document.write("					Problem 347<\/a>.<br>");
document.write("		Triangle, Altitude, Perpendicular, Circle, Concyclic points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p348_circles_common_tangents.htm\">");
document.write("					Problem 348<\/a>. <br>");
document.write("					Circles, Common External Tangents, Common Internal Tangent<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p349_triangle_cevian_incircles_common_tangent.htm\">");
document.write("					Problem 349<\/a>.<br>");
document.write("		Triangle, Cevian, Incircles, Tangents, Tangency Point.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p350_triangle_cevian_incircles_angle_tangent.htm\">");
document.write("					Problem 350<\/a>.<br>");
document.write("		Triangle, Cevian, Incircles, Tangents, Tangency Point, Angles.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p351_rhombus_circle_tangential_quadrilateral.htm\">");
document.write("					Problem 351<\/a>.<br>");
document.write("		Rhombus, Incircles, Common tangent, Circumscribable or Tangential quadrilateral.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p352_circle_tangential_quadrilateral.htm\">Problem ");
document.write("		352<\/a>.<br>");
document.write("		Tangential quadrilateral, Incircles, Common tangent, Circumscribable or Tangential quadrilateral.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p353_tangential_quadrilateral_diagonals_incircles.htm\">");
document.write("					Problem 353<\/a>.<br>");
document.write("		Tangential quadrilateral, Diagonals, Incircles, Inradii.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p354_rhombus_square_45_degrees.htm\">Problem 354<\/a>.<br>");
document.write("		Rhombus, Square, 45 degrees.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p355_concyclic_circle_cyclic_quadrilateral_tangent.htm\">");
document.write("					Problem 355<\/a>.<br>");
document.write("		Circles, Common external tangent, Concyclic points.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p356_square_triangle_area.htm\">Problem 356<\/a>.<br>");
document.write("		Square, Point inside, Triangles, Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p357_square_exterior_point_triangle_area.htm\">");
document.write("					Problem 357<\/a>.<br>");
document.write("		Square, Exterior point, Triangles, Area.&nbsp;<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p358_isosceles_triangle_80_80_20_congruence.htm\">");
document.write("					Problem 358<\/a>.<br>");
document.write("		Isosceles triangle 80-80-20, Circle, Angles, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p359_cyclic_quadrilateral_rhombus_angle_bisector.htm\">");
document.write("					Problem 359<\/a>.<br>");
document.write("		Cyclic quadrilateral, Angle bisector, Rhombus.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p360_area_triangle_circle.htm\">Problem 360<\/a>.<br>");
document.write("		Area of a triangle, Curvilinear triangles, Circles, Diameters.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p361_right_triangle_incircle_angle.htm\">Problem ");
document.write("					361<\/a>.<br>");
document.write("		Right triangle, Incircle, Incenter, Tangency points, Angle.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p362_circle_chord_perpendicular.htm\">Problem 362<\/a>.<br>");
document.write("		Circle, Chord, Perpendicular, Equal chords.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p363_right_triangle_congruence_angles.htm\">");
document.write("					Problem 363<\/a>.<br>");
document.write("		Right triangle, Congruence, Angles.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p364_triangle_circle_area.htm\">Problem 364<\/a>.<br>");
document.write("		Obtuse triangle, Congruence, Circles, Diameter, Curvilinear triangle, Area.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p365_circular_sector_60_degree.htm\">Problem 365<\/a>.<br>");
document.write("					Circular Sector of 60 degrees, Midpoints, Perpendicular, ");
document.write("					Congruence<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p366_equilateral_triangle_60_degree.htm\">Problem ");
document.write("					366<\/a>.<br>");
document.write("		Scalene triangle, Circumcircle, Angles, 60 Degrees, Equilateral triangle.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p367_square_45_degree_pythagoras.htm\">");
document.write("					Problem 367<\/a>.<br>");
document.write("		Square, Angle, 45 degrees, Pythagoras, Congruence, Similarity.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p368_triangle_120_angle_bisectors_perpendicular.htm\">");
document.write("					Problem 368<\/a>.<br>");
document.write("					Triangle, 120 degrees, Angle bisectors, Perpendicular<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p369_circle_chord_angle_congruence.htm\">Problem ");
document.write("					369<\/a>.<br>");
document.write("					Intersecting circles, Chord, Center, Angle, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p370_triangle_square_circle_tangent.htm\">");
document.write("					Problem 370<\/a>.<br>");
document.write("		Triangle with squares, Circumcircles, Tangent circles.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p371_square_triangle_circle_area.htm\">Problem 371<\/a>.<br>");
document.write("					Square, Inscribed circle, Triangle, Area.<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p372_circle_common_tangent_angles.htm\">Problem ");
document.write("					372<\/a>.<br>");
document.write("		Circles, Common Internal and External Tangent, Angles.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p373_square_circle_diagonal_angle.htm\">Problem ");
document.write("					373<\/a>.");
document.write("		<br>");
document.write("					Square, Inscribed Circle, Diagonal, Perpendicular, Angle.<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p374_triangle_internal_angle_bisector.htm\">");
document.write("					Problem 374<\/a>.<br>");
document.write("		Triangle, Incenter, Internal Angle Bisectors.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p375_triangle_external_angle_bisector.htm\">");
document.write("					Problem 375<\/a>.<br>");
document.write("		Triangle, Excenter, External Angle Bisectors.&nbsp;<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p376_triangle_internal_external_angle_bisector.htm\">");
document.write("					Problem 376<\/a>.<br>");
document.write("		Triangle, Excenter, Internal and External Angle Bisectors.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p377_triangle_internal_angle_bisector_altitude.htm\">");
document.write("					Problem 377<\/a>.<br>");
document.write("		Triangle, Internal Angle Bisector, Altitude.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p378_triangle_incenter_parallel_segment.htm\">");
document.write("					Problem 378<\/a>.<br>");
document.write("		Triangle, Incenter, Parallel to a side, Angle, Congruence.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p379_triangle_excenter_parallel_segment.htm\">");
document.write("					Problem 379<\/a>.<br>");
document.write("		Triangle, Excenter, Parallel to a side, Angle, Congruence.<br>");
document.write("					");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p380_triangle_excenter_parallel_segment.htm\">");
document.write("					Problem 380<\/a>.<br>");
document.write("		Triangle, Excenter, Parallel to a side, Angle, Congruence.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p381_quadrilateral_angle_bisector.htm\">Problem ");
document.write("		381<\/a>.<br>");
document.write("		Quadrilateral, Diagonals, Angle Bisectors, Angles.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p382_concave_quadrilateral_angle_bisector.htm\">");
document.write("		Problem 382<\/a>.<br>");
document.write("		Concave");
document.write("		Quadrilateral, Angle Bisectors, Angles.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p383_concave_quadrilateral_angle_bisector.htm\">");
document.write("		Problem 383<\/a>.<br>");
document.write("		Concave");
document.write("		Quadrilateral, Angle Bisectors, Semi-difference of Angles.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p384_triangle_angle_bisector_perpendicular_parallel.htm\">");
document.write("		Problem 384<\/a>.<br>");
document.write("		Triangle, Angle bisector, Perpendicular, Parallel, Semiperimeter.&nbsp;<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p385_triangle_angle_bisector_perpendicular_parallel.htm\">");
document.write("		Problem 385<\/a>.<br>");
document.write("		Triangle, Angle bisector, Perpendicular, Parallel, Semiperimeter.<br>");
document.write("		<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p386_triangle_angle_bisector_perpendicular_congruence.htm\">");
document.write("		Problem 386<\/a>.<br>");
document.write("		Triangle, Angle bisector, Perpendicular, Parallel, Semiperimeter, ");
document.write("		Congruence.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p387_triangle_angle_bisector_perpendicular_concyclic.htm\">");
document.write("		Problem 387<\/a>.");
document.write("		Triangle, Angle bisector, Perpendicular, Concyclic points.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p388_triangle_angle_bisector_perpendicular_parallel.htm\">");
document.write("		Problem 388<\/a>.<br>");
document.write("		Triangle, Angle bisector, Perpendicular, Parallel.<br>");
document.write("					<br>");
document.write("					&nbsp;<\/font><\/p>");
document.write("					<\/td>");
document.write("					<td valign=\"top\" width=\"25%\">");
document.write("					<p style=\"margin-top: 0; margin-bottom: 0\">");
document.write("					<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p389_triangle_parallel_cevian_harmonic_mean.htm\">");
document.write("		Problem 389<\/a>.<br>");
document.write("		Triangle, Parallel lines, Harmonic Mean.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p390_triangle_parallel_collinear.htm\">Problem 390<\/a>.<br>");
document.write("		Triangle, Parallel lines, Collinear points.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p391_triangle_parallel_collinear.htm\">Problem 391<\/a>.<br>");
document.write("		Triangle, Parallel lines, Collinear points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p392_triangle_parallel_collinear_concurrent.htm\">");
document.write("		Problem 392<\/a>.<br>");
document.write("		Triangle, Parallel lines, Concurrent lines.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p393_triangle_orthocenter_circumcircle_collinear.htm\">");
document.write("		Problem 393<\/a>.<br>");
document.write("		Triangle, Orthocenter, Circumcircles, Congruence, Collinear.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p394_square_arc_90_degrees_diagonal_congruence.htm\">");
document.write("		Problem 394<\/a>.<br>");
document.write("		Square, 90 Degree Arc, Diagonal, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p395_square_15_degree_equilateral_triangle.htm\">");
document.write("					Problem 395<\/a>.<br>");
document.write("		Square, 15 Degree, Equilateral triangle.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p396_square_trisectors_area_congruence.htm\">");
document.write("		Problem 396<\/a>.<br>");
document.write("		Square, Angle Trisectors, Congruence, Area.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p397_triangle_altitude_midpoint_congruence.htm\">");
document.write("		Problem 397<\/a>.<br>");
document.write("		Triangle, Altitude, Midpoints, Congruence.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p398_area_parallelogram.htm\">Problem 398<\/a>.<br>");
document.write("		Parallelogram, Area, Similarity, Congruence.&nbsp;<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p399_right_triangle_midpoint.htm\">Problem 399<\/a>.<br>");
document.write("		Right triangle, Midpoints, Distance, Pythagorean theorem, Congruence.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p400_triangle_angle_bisector_circumcircle.htm\">");
document.write("		Problem 400<\/a>.<br>");
document.write("		Triangle, Angle bisector, Circumcircle, Perpendicular, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p401_area_triangle_angle_bisector_circumcircle.htm\">");
document.write("					Problem 401<\/a>.<br>");
document.write("		Area, Triangle, Angle bisector, Circumcircle, Perpendicular bisector, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p402_hexagon_centroid_similarity_parallel.htm\">");
document.write("					Problem 402<\/a>.<br>");
document.write("		Hexagon, Triangle, Centroid, Parallel, Congruence, Similarity<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p403_circular_sector_90_degrees_area.htm\">Problem ");
document.write("		403<\/a>.<br>");
document.write("		Circular sector, 90 degrees, Circle, Semicircle, Area.<br>");
document.write("");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p404_equilateral_triangle_congruence_60_degrees_area.htm\">");
document.write("		Problem 404<\/a>.<br>");
document.write("		External Equilateral triangles, Congruent and Concurrent Lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p405_quadrilateral_60_75_degrees.htm\">");
document.write("					Problem 405<\/a>.<br>");
document.write("					Quadrilateral, 60, 75, and 135 degrees, Midpoint.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p406_right_triangle_15_degrees_midpoint.htm\">");
document.write("		Problem 406<\/a>.<br>");
document.write("		Right triangle, 15 degrees, Midpoints, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p407_angles_circle_tangent_perpendicular_secant.htm\">");
document.write("					Problem 407<\/a>.<br>");
document.write("					Circle, Angle, Tangent, Perpendicular, Secant, Radius, ");
document.write("					Center<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p408_cyclic_quadrilateral_perpendicular_parallelogram_congruence.htm\">");
document.write("					Problem 408<\/a>.<br>");
document.write("		Cyclic quadrilateral, Perpendicular, Parallelogram, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p409_angle_quadrilateral_congruence.htm\">Problem ");
document.write("					409<\/a>.<br>");
document.write("		Quadrilateral, Diagonals, Perpendicular, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p410_regular_pentagon_diagonal_angle.htm\">Problem ");
document.write("					410<\/a>.<br>");
document.write("		Two Regular Pentagons, Angle.<br>");
document.write("					<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p411_triangle_median_angle.htm\">");
document.write("					Problem 411<\/a>.<br>");
document.write("					Triangle, Median, Angles.<br>");
document.write("					&nbsp;<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p412_triangle_angle_congruence.htm\">");
document.write("					Problem 412<\/a>.<br>");
document.write("		Triangle, Angles, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p413_cyclic_quadrilateral_orthocenter_parallelogram_congruence.htm\">");
document.write("					Problem 413<\/a>.<br>");
document.write("		Cyclic Quadrilateral, Orthocenter, Parallelogram, Concurrency, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p414_triangle_angle_altitude_median_congruence.htm\">");
document.write("					Problem 414<\/a>.<br>");
document.write("		Triangle, Angles, Altitude, Median, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p415_right_triangle_cevian_angle_congruence.htm\">");
document.write("					Problem 415<\/a>.<br>");
document.write("					Right");
document.write("		Triangle, Cevian, Angles, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p416_triangle_area_cevian_trisector.htm\">Problem ");
document.write("					416<\/a>.<br>");
document.write("		Triangle, Cevians, Trisectors, Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p417_tangent_circles_angle.htm\">Problem 417<\/a>.<br>");
document.write("		Tangent circles, Tangent lines, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p418_incircle_triangle_tangent_circles_congruence.htm\">");
document.write("					Problem 418<\/a>.<br>");
document.write("		Triangle, Incircle, Inradius, Equal Tangent circles, Radius.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p419_incircle_isosceles_triangle_inradius_congruence.htm\">");
document.write("					Problem 419<\/a>.<br>");
document.write("		Triangle, Cevian, Incircle, Excircle, Inradius, Exradius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p420_triangle_angle_altitude_side_measurement.htm\">");
document.write("					Problem 420<\/a>.<br>");
document.write("		Triangle, Altitude, Angles, Sides, Measurement.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p421_right_triangle_angle_congruence.htm\">Problem ");
document.write("		421<\/a>.<br>");
document.write("		Right Triangle, Cevian, Angles, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p422_triangle_angle_30_24_degree.htm\">Problem 422<\/a>.<br>");
document.write("		Triangle, 24, 30 degree, Angle, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p423_triangle_cevian_angle_30_40_degree.htm\">");
document.write("					Problem 423<\/a>.<br>");
document.write("		Triangle, 24, 30 degree, Angle, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p424_triangle_cevian_angle_congruence.htm\">");
document.write("					Problem 424<\/a>.<br>");
document.write("		Triangle, Cevian, Angle, 90 degree, Congruence<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p425_geometry_classes_quadrilateral_angle_congruence.htm\">");
document.write("		Problem 425<\/a>.<br>");
document.write("		Quadrilateral, Triangle, Angles, 10, 20, 50 degrees, Congruence.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p426_geometry_classes_triangle_circumcenter_circumradius.htm\">");
document.write("		Problem 426<\/a>.");
document.write("		Triangle, Circumradius, Circumcenter, concurrent Cevians.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p427_geometry_classes_triangle_altitude_measurement.htm\">");
document.write("					Problem 427<\/a>.");
document.write("		Triangle, Two Altitudes, Square of a Side.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p428_geometry_classes_quadrant_circle_square_angle_bisector_measurement.htm\">");
document.write("					Problem 428<\/a>.<br>");
document.write("					Quadrant of a circle, Square, Angle bisector, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p429_regular_pentagon_circumscribed_inscribed_perpendicular_90_degrees.htm\">");
document.write("					Problem 429<\/a>.<br>");
document.write("		Circumscribed and Inscribed Regular Pentagon, Perpendicular, Measurement.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/routh's_theorem_1_triangle_area_cevian.htm\">");
document.write("		Routh's Theorem 1<\/a>.<br>");
document.write("		Triangle, Cevians, Ratio of Areas.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/routh's_theorem_2_triangle_area_cevian.htm\">");
document.write("		Routh's Theorem 2<\/a>.<br>");
document.write("		Triangle, Cevians, Ratio of Areas.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/routh's_theorem_3_triangle_area_ratio.htm\">");
document.write("		Routh's Theorem 3<\/a>.<br>");
document.write("		Triangle, Cevians, Ratio of Areas.<br>");
document.write("");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/routh's_theorem_4_triangle_area_ratio.htm\">");
document.write("		Routh's Theorem 4<\/a>.<br>");
document.write("		Triangle, Cevians, Ratio of Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p430_area_regular_pentagon_circumscribed_inscribed_perpendicular_90_degrees.htm\">");
document.write("					Problem 430<\/a>.<br>");
document.write("		Circumscribed and Inscribed Regular Pentagon, Perpendicular, Areas.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p431_quadrilateral_midpoint_diagonal_similarity.htm\">");
document.write("					Problem 431<\/a>.<br>");
document.write("		Quadrilateral, Midpoints of Diagonals, Transversal.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p432_trapezoid_parallel_measurement_similarity.htm\">");
document.write("		Problem 432<\/a>.Trapezoid, Parallel, Measurement, Similarity, Transversal.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p433_quadrilateral_area_measurement_ratio_similarity.htm\">");
document.write("		Problem 433<\/a>.");
document.write("		Quadrilateral, Triangle, Area, Proportion, Measurement, Similarity.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p434_quadrilateral_transversal_ratio_similarity.htm\">");
document.write("					Problem 434<\/a>.<br>");
document.write("		Quadrilateral, Transversal, Ratio, Measurement, Similarity.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p435_triangle_incircle_inradius_tangent_congruence_radius_similarity.htm\">");
document.write("					Problem 435<\/a>.");
document.write("		Triangle, Incircle, Inradius, Congruent circles, tangent, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/center\/distance_incenter_centroid_formula_sides.htm\">Distance between the Incenter and the Centroid of a Triangle<\/a><br>");
document.write("					Formula");
document.write("		in terms of the sides a,b,c.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p436_tangent_circles_diameter_chord_perpendicular_congruence.htm\">");
document.write("					Problem 436<\/a>.<br>");
document.write("		Tangent Circles, Diameter, Chord, Perpendicular, Congruence, Measurement.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p437_tangent_circles_diameter_chord_perpendicular_congruence.htm\">");
document.write("					Problem 437<\/a>.<br>");
document.write("		Tangent Circles, Diameter, Chord, Perpendicular, Congruence, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p438_tangent_circles_diameter_chord_perpendicular_congruence.htm\">");
document.write("					Problem 438<\/a>. <br>");
document.write("		Tangent Circles, Diameter, Chord, Perpendicular, Congruence, Measurement, ");
document.write("					Parallel lines.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p439_isosceles_triangle_cevian_incenter_angle.htm\">");
document.write("					Problem 439<\/a>.<br>");
document.write("		Isosceles triangle, Cevian, Incenter, Angles, Circle.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p440_geometry_problem_triangle_incenter_angle.htm\">");
document.write("					Problem 440<\/a>.<br>");
document.write("		Triangle, Incircle, Incenter, Angle Bisector, Tangency Points, Circle, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p441_quadrilateral_area_measurement_ratio_similarity.htm\">");
document.write("		Problem 441<\/a>.<br>");
document.write("		Quadrilateral, Triangle, Area, Proportion, Measurement, Similarity.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p442_triangle_transversal_median_cevian_angles_similarity.htm\">");
document.write("		Problem 442<\/a>.Triangle, Median, Cevian, Transversal, Congruent Angles.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p443_overlapping_circles_common_chord_tangent_angles.htm\">");
document.write("					Problem 443<\/a>.<br>");
document.write("		Overlapping, Intersecting Circles, Common Chord, Secant line, Tangent line, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p444_tangent_circles_secant_angles.htm\">");
document.write("					Problem 444<\/a>.<br>");
document.write("		Internally Tangent circles, Secant line, Chords, Angles, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p445_three_tangent_circles_circumradius.htm\">");
document.write("					Problem 445<\/a>.<br>");
document.write("		Three Tangent Circles, Tangency Points, Circumradius.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p446_quadrilateral_area_five_equal_parts_sides.htm\">");
document.write("		Problem 446<\/a>.<br>");
document.write("		Quadrilateral Area, Dividing the sides into 5 equal parts.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p447_complete_quadrilateral_incircle_inradius__excircle_exradius_sides.htm\">");
document.write("		Problem 447<\/a>.<br>");
document.write("		Complete Quadrilateral, Inradii, Exradii, Sides.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p448_tangent_circles_diameter_perpendicular_chord.htm\">");
document.write("		Problem 448<\/a>.<br>");
document.write("		Tangent Circles, Diameter, Perpendicular, Chord.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p449_right_triangle_semicircle_sagitta_chord_tangent_circles.htm\">");
document.write("					Problem 449<\/a>.<br>");
document.write("		Congruent Tangent Circles, Diameter, Sagitta, Arc, Perpendicular, Chord.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p450_triangle_median_isosceles_cevian_proportional_segments.htm\">");
document.write("					Problem 450<\/a>.<br>");
document.write("		Triangle, Median, Cevian, Congruence, Proportional Segments.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p451_triangle_median_isosceles_proportional_segments.htm\">");
document.write("		Problem 451<\/a>.<br>");
document.write("		Triangle, Median, Congruence, Proportional Segments.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p452_circle_tangent_triangle_proportional_segments.htm\">");
document.write("		Problem 452<\/a>.<br>");
document.write("		Triangle, Circle, Tangent, Proportional Segments.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p453_intersecting_circles_circular_segment_congruence.htm\">");
document.write("					Problem 453<\/a>.<br>");
document.write("		Intersecting Circles, Tangent, Circular Segment, Congruence, Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p454_triangle_incircle_inradius_tangent_circle_radii.htm\">");
document.write("					Problem 454<\/a>.<br>");
document.write("		Triangle, Incircle, Inradius, Tangent, Circle, Radius.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p455_rhombus_inscribed_circle_angle_45_degrees.htm\">");
document.write("					Problem 455<\/a>.<br>");
document.write("		Rhombus, Inscribed Circle, Angle, Chord, 45 Degrees.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p456_three_tangent_circles_chord_secant_center_collinear.htm\">");
document.write("					Problem 456<\/a>.<br>");
document.write("		Three tangent circles, Center, Chord, Secant, Collinear.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p457_brocard_point_triangle_circles_circumcenter_radii.htm\">");
document.write("					Problem 457<\/a>.<br>");
document.write("		Triangle, First Brocard Point, Congruent angles, Circle, Circumradius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p458_square_semicircle_circular_sector_tangent_measure.htm\">");
document.write("					Problem 458<\/a>.<br>");
document.write("					Square, Semicircle, Circular Sector, Internal Common ");
document.write("					Tangent, Measure.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p459_right_triangle_square_measurement.htm\">");
document.write("					Problem 459<\/a>.<br>");
document.write("		Right triangle, Squares, Distance, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p460_circle_radius_tangent_perpendicular_measurement.htm\">");
document.write("					Problem 460<\/a>.<br>");
document.write("		Circle, Tangent, Perpendicular, Radius, Distance, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p461_three_circles_right_angle_tangent_radius_measurement.htm\">");
document.write("					Problem 461<\/a>.<br>");
document.write("		Three Circles, Tangent, Right Angle, Center, Distance, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/education\/p462_square_circle_arc_90_degrees_tangent_radius.htm\">");
document.write("					Problem 462<\/a>.<br>");
document.write("		Square, Arcs, 90 Degrees, Circle, Tangent, Radius, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p463_three_concentric_circles_secant_tangents_triangle_area.htm\">");
document.write("					Problem 463<\/a>.");
document.write("		Three Concentric Circles, Secant, Tangent, Triangle, Area.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p464_square_center_arc_angle_120_degrees.htm\">");
document.write("					Problem 464<\/a>.<br>");
document.write("					Square, Arcs, Center, Angle, 90 Degrees, 120 Degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p465_square_arc_angle_90_degrees.htm\">Problem 465<\/a>.<br>");
document.write("		Square, Arc, Angle, 90 Degrees, Measurement.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p466_concentric_circles_secant_congruence.htm\">");
document.write("		Problem 466<\/a>.<br>");
document.write("		Concentric Circles, Secant, Congruence, Measurement.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p467_concentric_circles_chord_tangent_congruence.htm\">");
document.write("		Problem 467<\/a>.<br>");
document.write("		Concentric Circles, Chord, Tangent, Congruence, Measurement.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p468_circle_chord_midpoint_angle_congruence.htm\">");
document.write("		Problem 468<\/a>.<br>");
document.write("		Circle, Chord, Midpoint, Congruence, Angle.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p469_isosceles_triangle_midpoint_transversal.htm\">");
document.write("					Problem 469<\/a>.<br>");
document.write("		Isosceles triangle, Midpoint, Transversal, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p470_triangle_parallel_similarity_area_degree.htm\">");
document.write("					Problem 470<\/a>.<br>");
document.write("		Triangle, Parallel, Parallelogram, Area, Similarity.<br>");
document.write("					<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p471_triangle_parallel_similarity_area_degree.htm\">Problem 471<\/a>.<br>");
document.write("					Triangle, Parallel, Side, Concurrency, Area, Similarity<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p472_triangle_parallel_similarity_area_degree.htm\">Problem 472<\/a>.<br>");
document.write("					Triangle, Parallel, Side, Parallelogram, Area, Similarity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p473_triangle_parallel_similarity_area_degree.htm\">Problem 473<\/a>.<br>");
document.write("		Triangle, Parallel, Side, Parallelogram, Area, Similarity.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p474_parallelogram_circle_diagonal_vertex.htm\">Problem 474<\/a>.<br>");
document.write("		Parallelogram, Diagonal, Circle, Vertex.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p475_tangent_circles_secant_parallel.htm\">Problem 475<\/a>.<br>");
document.write("		 Tangent Circles, Secant, Tangent, Parallel.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p476_triangle_circle_circuncenter_angle.htm\">Problem 476<\/a>.<br>");
document.write("		 Triangle, Circumcenter, Circumcircle, Angles.&nbsp;<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p477_parallelogram_area.htm\">Problem 477<\/a>.<br>");
document.write("		 Parallelogram, Triangle, Quadrilateral, Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p478_triangle_sides_circumradius_circumcircle.htm\">Problem 478<\/a>.<br>");
document.write("		 			Triangle, Sides, Circumradius, Circumcenter, Circumcircle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p479_triangle_cevian_concurrent_transversal_proportion.htm\">Problem 479<\/a>.<br>");
document.write("		 Triangle, Cevians, Concurrency, Transversal, Proportion.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p480_triangle_circle_altitude_circumcenter_angle.htm\">Problem 480<\/a>.<br>");
document.write("		 Triangle, Circle, Center, Altitude, Angle, Circumcenter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p481_triangle_cevian_perpendicular_angles.htm\">Problem 481<\/a>.<br>");
document.write("		 Triangle, Altitude, Cevian, Perpendicular, Angle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p482_triangle_circumcircle_incenter_excenter_midpoint_cyclic.htm\">Problem 482<\/a>.<br>");
document.write("		 Triangle, Circumcircle, Incenter, Excenter, Midpoint, Cyclic Points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p483_square_triangle_90_degrees_measurement.htm\">Problem 483<\/a>.<br>");
document.write("		 Square, Angle, 90 degrees, Measurement.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p484_square_triangle_90_degrees_measurement_proportion.htm\">Problem 484<\/a>.<br>");
document.write("		 Square, Angle, 90 degrees, Triangle, Measurement, Proportion.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p485_square_circles_inscribed_tangent_radius_side_measurement.htm\">Problem 485<\/a>.<br>");
document.write("		 Square, Side, Circles, Tangent, Radius, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p486_tangent_circle_chord_arc_midpoint_collinear_angle.htm\">Problem 486<\/a>.<br>");
document.write("		 Tangent circles, Chord, Arc, Midpoint, Collinearity, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p487_circle_area_triangle_circular_segment_90_degrees.htm\">Problem 487<\/a>.<br>");
document.write("		 			Intersecting");
document.write("		 Circles, Area, Diameter, Parallel, 90 Degrees.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p488_triangle_cevian_concurrent_circle.htm\">Problem 488<\/a>.<br>");
document.write("		 Triangle, Cevian, Concurrency, Circle, Circumcircle.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p489_parallelogram_triangle_quadrilateral_area.htm\">Problem 489<\/a>.<br>");
document.write("		 Parallelogram, Triangle, Quadrilateral, Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p490_circular_sector_area_tangent_circles_arc_degrees.htm\">Problem 490<\/a>.<br>");
document.write("		 Tangent Circles, Arc, Radius, Circular Sector, Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p491_square_circle_incircle_radius_side.htm\">Problem 491<\/a>.");
document.write("		 Square, Right Triangle, Incircle, Inscribed Circle, Radius.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p492_cyclic_quadrilateral_perpendicular_parallel.htm\">");
document.write("					Problem 492<\/a>.<br>");
document.write("		 			Cyclic Quadrilateral, Circle, Perpendicular, Side, Diagonal, ");
document.write("					Parallel.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p493_right_triangle_circumcircle_perpendicular_chord.htm\">");
document.write("					Problem 493<\/a>.<br>");
document.write("		 			Right Triangle, Circumcircle, Perpendicular, Chord.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p494_circular_sector_90_degrees_semicircle_chord.htm\">");
document.write("					Problem 494<\/a>.<br>");
document.write("		 			Circular Sector, 90 Degrees, Semicircle, Chord, Parallel.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p495_triangle_120_degrees_angle_bisector.htm\">");
document.write("					Problem 495<\/a>.<br>");
document.write("		 			Triangle, 120 Degrees, Angle Bisectors.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p496_triangle_two_square_side_concurrent_90_degrees.htm\">");
document.write("					Problem 496<\/a>. Triangle, Two Squares, 90 Degrees, ");
document.write("					Concurrency, Angle Bisectors.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p497_triangle_two_square_side_midpoint_90_degrees.htm\">");
document.write("					Problem 497<\/a>.<br>");
document.write("		 			Triangle, Two Squares, Centers, Midpoint, 90 Degrees.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p498_triangle_angle_bisector_measure.htm\">");
document.write("					Problem 498<\/a>.<br>");
document.write("		 			Triangle, Angle Bisector, Double Angle, Measure.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p499_triangle_two_square_perpendicular.htm\">");
document.write("					Problem 499<\/a>. Triangle, Two Squares, Perpendicular.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p500_circle_diameter_chord_perpendicular_measure.htm\">");
document.write("					Problem 500<\/a>.<br>");
document.write("		 			Circle, Diameter, Chord, Perpendicular, Measure.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p501_triangle_three_square_center_midpoint.htm\">");
document.write("					Problem 501<\/a>.<br>");
document.write("		 			Triangle, Two Squares, Center, Midpoint, another Square.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p502_triangle_two_square_midpoint_perpendicular.htm\">");
document.write("					Problem 502<\/a>.<br>");
document.write("		 			Triangle, Two Squares, Midpoint, Perpendicular, Half the ");
document.write("					measure.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p503_triangle_three_square_center_perpendicular.htm\">Problem ");
document.write("		503<\/a>.<br>");
document.write("		 Triangle with Three Squares, Perpendicular, Congruence, Concurrency.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p504_equilateral_triangle_45_60_degrees.htm\">Problem ");
document.write("		504<\/a>.<br>");
document.write("		 Equilateral Triangle, Angles, 45, 60 Degrees.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p505_right_triangle_angles.htm\">Problem ");
document.write("		505<\/a>.<br>");
document.write("		 Right Triangle, Cevian, Sum of Segments, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p506_triangle_square_center_congruence_mind_map.htm\">Problem ");
document.write("		506<\/a>.<br>");
document.write("		 Triangle with Three Squares, Center, Midpoint, Perpendicular.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p507_triangle_120_degrees_congruence_mind_map.htm\">Problem ");
document.write("		507<\/a>.<br>");
document.write("		 Triangle, Interior Point, 120 Degrees, Congruence, Angle.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p508_triangle_square_area_mind_map.htm\">Problem ");
document.write("		508<\/a>.<br>");
document.write("		 Triangle with three Squares, Four triangle of equal Area.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p509_triangle_120_degrees_congruence_mind_map.htm\">Problem ");
document.write("		509<\/a>.<br>");
document.write("		Triangle, 120 Degrees, Angles, Congruence, Mind Map.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p510_triangle_squares_midpoint_concurrency_mind_map.htm\">Problem ");
document.write("		510<\/a>.<br>");
document.write("		Triangle, Three Squares, Midpoints, Concurrency.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p511_double_angle_triangle_angle_bisector_mind_map.htm\">Problem ");
document.write("		511<\/a>.<br>");
document.write("		Triangle, Double Angle, Angle Bisector, Measure.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p512_triangle_squares_concurrency_mind_map.htm\">Problem ");
document.write("		512<\/a>.<br>");
document.write("		Triangle with three squares and concurrency.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p513_double_angle_triangle_exterior_angle_bisector.htm\">Problem ");
document.write("		513<\/a>.<br>");
document.write("		Triangle, Double Angle, Exterior Angle Bisector, Measure.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p514_triangle_five_squares_area.htm\">Problem ");
document.write("		514<\/a>.<br>");
document.write("		Triangle, Five Squares, Line, Area.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p515_double_angle_triangle_altitude_measure.htm\">Problem ");
document.write("		515<\/a>.<br>");
document.write("		Triangle, Double Angle, Altitude, Measure.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p516_triangle_angle_cevian_congruence.htm\">Problem ");
document.write("		516<\/a>.<br>");
document.write("		Triangle, Cevian, Congruence, Angles.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p517_right_triangle_six_squares_area.htm\">Problem ");
document.write("		517<\/a>.<br>");
document.write("		Right Triangle, Six Squares, Areas.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p518_parallelogram_five_squares_45_degrees.htm\">Problem ");
document.write("		518<\/a>.<br>");
document.write("		Parallelogram, Five Squares, Centers, 45 Degrees, Measure.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p519_triangle_square_perpendicular_rectangle_area.htm\">Problem ");
document.write("		519<\/a>.<br>");
document.write("		Triangle, Squares, Altitude, Perpendicular, Rectangle, Area.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p520_triangle_six_squares_area.htm\">Problem ");
document.write("		520<\/a>.<br>");
document.write("		Triangle with six Squares, Ratio, Area.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p521_triangle_squares_altitude_rectangle_area.htm\">Problem ");
document.write("		521<\/a>.<br>");
document.write("		Triangle with three Squares, Altitude, Rectangle, Area.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p522_right_triangle_circle_tangent_diameter.htm\">Problem 522<\/a>.<br>");
document.write("		Right Triangle, Circle, Diameter, Tangent.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p523_tangent_circles_diameter_perpendicular_collinear.htm\">Problem 523<\/a>.<br>");
document.write("		Tangent Circles, Diameter Perpendicular, Collinearity.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p524_equilateral_triangles_circle_side_measure.htm\">Problem 524<\/a>.<br>");
document.write("		Circle, Equilateral Triangles, Midpoint, Side, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p525_circles_tangent_radius_congruence_similarity.htm\">Problem 525<\/a>.");
document.write("		Circles, Diameter, Tangent, Radius, Congruence, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p526_equilateral_triangle_circumcircle_chord.htm\">Problem 526<\/a>.<br>");
document.write("		Equilateral Triangle, Chord, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p527_circle_tangent_secant_midpoint.htm\">Problem 527<\/a>.<br>");
document.write("		Circle, Tangent, Secant, Chord, Midpoint, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p528_triangle_medians_perpendicular.htm\">Problem 528<\/a>.<br>");
document.write("		Triangle, Medians, Perpendicular, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p529_right_trapezoid_circle_diameter.htm\">Problem 529<\/a>.<br>");
document.write("		Right Trapezoid, Circle, Diameter.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p530_cyclic_quadrilateral_diameter_diagonal_perpendicular_congruence.htm\">Problem 530<\/a>.<br>");
document.write("		Right Trapezoid, Circle, Diameter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p531_triangle_angle_bisector_midpoint_parallel_perimeter.htm\">Problem 531<\/a>.<br>");
document.write("		Triangle, Angle Bisector, Midpoint, Parallel, Perimeter, Semiperimeter.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p532_triangle_area_circle_isogonal_perpendicular_circumcircle_math.htm\">Problem 532<\/a>.<br>");
document.write("		Triangle, Circumcircle, Equal Angles, Perpendicular, Area.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/geometry\/euclid_elements_book_xiii_10_decagon.htm\">Problem ");
document.write("533.<\/a> <br>");
document.write("Euclid's ");
document.write("Elements, Book XIII, Proposition 10.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p534_right_triangle_area_square_dissection.htm\">Problem ");
document.write("534.<\/a> <br>");
document.write("Right Triangle, Squares, Perpendicular, Dissection, Areas.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/sawayama_thebault_theorem.htm\">Problem ");
document.write("535.<\/a> <br>");
document.write("Sawayama - Thebault's theorem: Triangle, Incircle, Circle, Center, Tangent, ");
document.write("Collinear.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p536_intersecting_circles_chord_perpendicular.htm\">Problem ");
document.write("536.<\/a> <br>");
document.write("Intersecting Circles, Chord, Perpendicular.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p537_rectangle_midpoint_diagonal_angle_bisector.htm\">Problem ");
document.write("537.<\/a> <br>");
document.write("Rectangle, Midpoints, Diagonal, Angle Bisector.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p538_triangle_circle_circumcircle_perpendicular_bisector_midpoint.htm\">Problem ");
document.write("538.<\/a> <br>");
document.write("Triangle, Perpendicular Bisector, Circumcircle, Midpoint.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/pythagoras\/p539_right_triangle_square_area.htm\">Problem ");
document.write("539.<\/a> <br>");
document.write("Right Triangle, Square, Parallel, Perpendicular, Dissection, Area, Pythagoras.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p541_right_triangle_altitude_angle_bisector.htm\">Problem ");
document.write("541.<\/a> <br>");
document.write("Right Triangle, Altitude, Angle Bisector, Congruence.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p542_right_triangle_altitude_angle_bisector.htm\">Problem ");
document.write("542.<\/a> <br>");
document.write("Right Triangle, Altitude, Angle Bisector, Perpendicular, 90 Degrees.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p543_right_triangle_altitude_angle_bisector_median.htm\">Problem ");
document.write("543.<\/a> <br>");
document.write("Right Triangle, Altitude, Angle Bisector, Median.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p544_right_triangle_altitude_median_measure.htm\">Problem ");
document.write("544.<\/a> <br>");
document.write("Right Triangle, Altitude, Median, Equal angles, Measure.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p545_acute_triangle_square_area_altitude.htm\">Problem ");
document.write("545.<\/a> <br>");
document.write("Acute Triangle, Squares, Altitudes, Area, Measure.&nbsp;<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p546_triangle_angle_trisectors_equilateral_60_degrees.htm\">Problem ");
document.write("546.<\/a> <br>");
document.write("Triangle, Angle Trisectors, 60 Degrees, Equilateral triangle.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p547_triangle_transversal_circumcircles.htm\">Problem ");
document.write("547.<\/a> <br>");
document.write("Triangle, Transversal, Four Circumcircles, Concurrency.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p548_triangle_transversal_circumcircle_circumcenter_concyclic_similarity.htm\">Problem ");
document.write("548.<\/a> <br>");
document.write("Triangle, Transversal, Four Circumcircles, Circumcenters, Concyclic Points, ");
document.write("					Similarity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p549_parallel_lines_angle_sum_transversal.htm\">Problem ");
document.write("549.<\/a> <br>");
document.write("Parallel lines, Transversal, Angle Sums.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p550_parallel_lines_angle_sum_transversal.htm\">Problem ");
document.write("550.<\/a> <br>");
document.write("Parallel lines, Transversal, Angle Sums.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p551_parallel_lines_angle_sum_transversal.htm\">Problem ");
document.write("551.<\/a> <br>");
document.write("Parallel lines, Transversal, Angle Sums.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p552_parallel_lines_angle_sum_transversal.htm\">Problem ");
document.write("552.<\/a> <br>");
document.write("Parallel lines, Transversal, Angle Sums.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p553_quadrilateral_angle_sum.htm\">Problem ");
document.write("553.<\/a> <br>");
document.write("		Quadrilateral, Angles, Sum.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p554_concave_quadrilateral_angle_sum.htm\">Problem ");
document.write("554.<\/a> <br>");
document.write("		Concave Quadrilateral, Angles, Sum.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p555_parallel_lines_angle_sum_transversal.htm\">Problem ");
document.write("555.<\/a> <br>");
document.write("Parallel lines, Angle Sums.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p556_quadrilateral_angle_auxiliary_lines.htm\">Problem ");
document.write("556.<\/a> <br>");
document.write("Quadrilateral, Diagonal, Angles, Auxiliary Lines.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p557_varignon_parallelogram_midpoint_area.htm\">Problem ");
document.write("557.<\/a> ");
document.write("Quadrilateral, Midpoints, Sides, Varignon Parallelogram, Area, Auxiliary Lines.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p558_wittenbauer_parallelogram_trisection_area.htm\">Problem ");
document.write("558.<\/a> ");
document.write("Quadrilateral, Trisection, Sides, Wittenbauer Parallelogram, Area, Auxiliary Lines.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p559_triangle_cevian_incenters_angle_90_degrees.htm\">Problem ");
document.write("559.<\/a> <br>");
document.write("Triangle, Cevian, Incenters, Angle, 90 Degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p560_triangle_cevian_incircles_tangent_congruence.htm\">Problem ");
document.write("560.<\/a> <br>");
document.write("Triangle, Cevian, Incenter, Incircle, Perpendicular, Tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p561_triangle_cevian_incircles_90_degrees.htm\">Problem ");
document.write("561.<\/a> <br>");
document.write("Triangle, Cevian, Incenter, Incircle, Perpendicular, Tangent.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p562_math_education_triangle_cevian_incircles_cyclic_quadrilateral_concyclic.htm\">Problem ");
document.write("562.<\/a> <br>");
document.write("Triangle, Cevian, Incenter, Perpendicular, Concyclic Points, Cyclic ");
document.write("					Quadrilateral.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p563_regular_pentagon_rectangle_center_angle.htm\">Problem ");
document.write("563.<\/a> <br>");
document.write("Regular Pentagon, Center, Rectangle, Diagonals, Angle.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p564_complete_quadrilateral_incenter_excenter_concyclic.htm\">Problem ");
document.write("564.<\/a> <br>");
document.write("Complete Quadrilateral, Incenter, Excenter, Concyclic Points.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p565_math_education_triangle_isogonal_circle_concyclic_congruence.htm\">Problem ");
document.write("565.<\/a> <br>");
document.write("Triangle, Isogonal lines, Angles, Congruence, Concyclic Points.<br>");
document.write("					&nbsp;<\/font><\/td>");
document.write("					<td valign=\"top\" width=\"25%\">");
document.write("					<p style=\"margin-top: 0; margin-bottom: 0\">");
document.write("					<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p566_quadrilateral_diagonal_parallel_reasoning_proof.htm\">Problem ");
document.write("566.<\/a> <br>");
document.write("Quadrilateral, Diagonals, Parallel.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p567_right_triangle_incircle_excircle_collinear_points_reasoning_proof.htm\">Problem ");
document.write("567.<\/a> <br>");
document.write("Right triangle, Incircle, Excircle, Collinear tangency points.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p568_triangle_excircles_congruence_geometry_education.htm\">Problem ");
document.write("568.<\/a> <br>");
document.write("Triangle, Excircles, Tangency Point, Congruence.<br>");
document.write("					<br>");
document.write("			");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p569_quadrilateral_excircles_tangency_point_congruence.htm\">Problem ");
document.write("569.<\/a> <br>");
document.write("Quadrilateral, Excircles, Tangency Points, Congruence.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p570_square_right_triangle_congruence_collinear_points_math_degree.htm\">Problem ");
document.write("570.<\/a> <br>");
document.write("Square, Center, Right Triangles, Congruence, Collinearity<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p571_circle_diameter_chord_perpendicular_measure_math_degree.htm\">Problem ");
document.write("571.<\/a> <br>");
document.write("Circle, Diameter, Chord, Perpendicular, Measurement.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p572_right_triangle_excircle_median_circle_diameter_tangent_math_degree.htm\">Problem ");
document.write("572<\/a>.");
document.write("Right triangle, Median, Circle, Diameter, Excircle, Tangent circles.<br>");
document.write("					<br>");
document.write("					");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p573_cyclic_quadrilateral_angle_bisector_perpendicular_math_ed.htm\">Problem ");
document.write("573<\/a>.<br>");
document.write("Cyclic quadrilateral, Angle bisector, Perpendicular.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p574_circle_angle_bisector_perpendicular_math_ed.htm\">Problem ");
document.write("574.<\/a> <br>");
document.write("Circle, Chord, Secant, Angle Bisector, Perpendicular.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p575_cyclic_quadrilateral_angle_bisector_measurement_math_ed.htm\">Problem ");
document.write("575.<\/a> <br>");
document.write("Cyclic quadrilateral, Angle bisector, Measurement.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p576_centroid_triangle_quadrilateral_parallel_math_ed.htm\">Problem ");
document.write("576<\/a>.");
document.write("Centroid, Triangle, Quadrilateral, Parallel, Measurement.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p577_isosceles_triangle_midpoint_perpendicular_concyclic_points_circle.htm\">Problem ");
document.write("577<\/a>.<br>");
document.write("Isosceles triangle, Midpoint, Perpendicular, Concyclic points, Circle.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p578_chords_90_degrees_area_math_ed.htm\">Problem ");
document.write("578.<\/a> <br>");
document.write("					Circle, Perpendicular Chords, Midpoints, Curvilinear Triangle, Area, 90 Degrees.<br>");
document.write("					<br>");
document.write("	<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p579_quadrilateral_diagonal_triangle_area_math_ed.htm\">Problem ");
document.write("579.<\/a> <br>");
document.write("Quadrilateral, Diagonals, Triangles, Areas.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p580_triangles_equal_angle_area_product_sides_math_ed.htm\">Problem ");
document.write("580<\/a>. <br>");
document.write("Triangles, Equal Angle, Transversal, Product of Sides, Areas.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p581_triangular_pyramid_volume_equal_trihedral_product.htm\">Problem ");
document.write("581<\/a>.<br>");
document.write("Volume of two Triangular Pyramids, Equal Trihedral Angle, Product of three Edges.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p582_quadrilateral_diagonals_incenters_metric_relations.htm\">Problem ");
document.write("582.<\/a> <br>");
document.write("Quadrilateral, Diagonals, Incenters, Metric Relations.<br>");
document.write("					<\/font>");
document.write("					<font color=\"#000000\" face=\"Arial\" style=\"font-size: 9pt\">");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p583_quadrilateral_diagonals_circumcenters_parallelogram_octagon_area.htm\">Problem ");
document.write("583.<\/a> <br>");
document.write("Quadrilateral, Diagonals, Circumcenters, Parallelogram, Octagon, Areas.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p584_cyclic_quadrilateral_diagonals_circumcenters_parallelograms.htm\">Problem ");
document.write("584.<\/a> <br>");
document.write("Cyclic Quadrilateral, Diagonals, Circumcenters, Circumcircles, Parallelograms.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p585_cyclic_quadrilateral_diagonals_circumcenters_concurrency_distance.htm\">Problem ");
document.write("585.<\/a> <br>");
document.write("					Cyclic Quadrilateral, Diagonals, Circumcenters, Circumcircles, Concurrency.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p586_cyclic_quadrilateral_diagonals_a_point_circumcenters_concurrency_distance.htm\">Problem ");
document.write("586.<\/a> <br>");
document.write("Cyclic Quadrilateral, Diagonals, Any Point, Circumcenters, Circumcircles, Concurrency.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p587_triangle_incircle_tangency_point_midpoint_distance.htm\">Problem ");
document.write("587.<\/a> <br>");
document.write("Triangle, Incenter, Incircle, Tangency Point, Midpoint, Distance, Half the Difference.<br>");
document.write("					<br>");
document.write("		");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p588_triangle_incircle_tangency_points_midpoints_distance_sum.htm\">Problem ");
document.write("588.<\/a> <br>");
document.write("Triangle, Incenter, Incircle, Tangency Points, Midpoints, Distance, Sum.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p589_triangle_incircle_tangency_point_midpoint_perpendicular_distance.htm\">Problem ");
document.write("589<\/a>. <br>");
document.write("Triangle, Incenter, Incircle, Tangency Points, Midpoint, Perpendicular, Distance.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p590_triangle_incircle_incenter_tangency_point_midpoint_sum_area.htm\">Problem ");
document.write("590<\/a>.");
document.write("<br>");
document.write("					Triangle, Incenter, Incircle, Tangency Point, Midpoint, Areas.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p591_triangle_incircle_incenter_tangency_point_midpoint_altitude_inradius.htm\">Problem ");
document.write("591<\/a>.<br>");
document.write("Triangle, Incenter, Incircle, Inradius, Tangency Point, Midpoint, Altitude.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p592_triangle_incircle_incenter_tangency_point_midpoint_concurrency.htm\">Problem ");
document.write("592<\/a>.<br>");
document.write("Triangle, Incenter, Incircle, Tangency Point, Midpoints, Concurrent Lines, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p593_triangle_circumcircle_collinear_points.htm\">Problem ");
document.write("593<\/a>. ");
document.write("Triangle, Circumcircle, Collinear Points<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p594_triangle_incircle_incenter_tangency_point_midpoint_altitude_inradius_angle.htm\">Problem ");
document.write("594<\/a>. <br>");
document.write("Triangle, Incenter, Incircle, Inradius, Tangency Point, Midpoint, Altitude, Angle, Half the Difference.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p595_triangle_isogonal_equal_angle_metric_relation_similarity.htm\">Problem ");
document.write("595<\/a>.<br>");
document.write("Triangle, Equal Angles, Isogonal Conjugate, Similarity.<br>");
document.write("					<br>");
document.write("					");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p596_quadrilateral_right_triangle_isosceles_midpoint_congruence.htm\">Problem 596<\/a>.<br>");
document.write("Quadrilateral, Right Triangle, Isosceles, Midpoint.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p597_quadrilateral_right_triangle_isosceles_angle_congruence.htm\">Problem 597<\/a>.<br>");
document.write("Quadrilateral, Right Triangle, Isosceles, Angle, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p598_trapezoid_perpendicular_equal_angle_metric_relation.htm\">Problem 598<\/a><br>");
document.write("					Trapezoid, Perpendicular, Equal Angles, Metric Relation.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p599_hexagon_square_midpoint_angle_degrees.htm\">Problem 599<\/a><br>");
document.write("Regular Hexagon, Square, Midpoint, Angle, Degrees.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p600_circle_area_semicircle_tangent_diameter_honors_geometry_degree.htm\">Problem ");
document.write("600<\/a><br>");
document.write("Circle, Area, Tangent, Semicircle, Tangency Point.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p601_triangle_circle_cyclic_quadrilateral_incenter_excenter_rectangle_online_geometry.htm\">Problem ");
document.write("601<\/a><br>");
document.write(" Cyclic Quadrilateral, Incenter, Excenter, Rectangle.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p602_triangle_angle_cevian_30_45_degrees_congruence_online_geometry.htm\">Problem ");
document.write("602<\/a><br>");
document.write(" Triangle, Angles, 30 and 45 Degrees, Cevian, Congruence.<br>");
document.write("					<br>");
document.write("					");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p603_parallelogram_diagonal_concurrency_congruence_online_geometry.htm\">Problem ");
document.write("603<\/a> <br>");
document.write(" Parallelogram, Diagonals, Congruence, Concurrency.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p604_parallelogram_triangle_trapezoid_area_online_geometry.htm\">Problem ");
document.write("604<\/a>");
document.write(" <br>");
document.write(" Parallelograms, Triangle, Trapezoid, Area.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p605_circle_square_metric_relation_geometry.htm\">Problem ");
document.write("605<\/a><br>");
document.write(" Circle, Square, Chord, Perpendicular, Metric Relations.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p606_isosceles_triangle_perpendicular_parallel.htm\">Problem ");
document.write("606<\/a><br>");
document.write(" Isosceles Triangles, Perpendicular and Parallel Lines.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p607_intersecting_circles_triangle_metric_relations.htm\">Problem ");
document.write("607<\/a><br>");
document.write(" Intersecting Circles, Triangles, Metric Relations, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p608_square_right_triangle_metric_relations_congruence.htm\">Problem ");
document.write("608<\/a><br>");
document.write(" Square with Right Triangles, Metric Relations, Congruence, Measurement.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p609_triangle_point_perpendicular_collinearity_online_geometry.htm\">Problem ");
document.write("609<\/a><br>");
document.write("		Triangle, Perpendiculars, 90 Degrees, Collinearity.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p610_intersecting_circles_parallel_common_tangent_90_degrees_online_geometry.htm\">Problem ");
document.write("610<\/a><br>");
document.write("Intersecting Circles, Radius, Parallel, Common Tangent, Angle, 90 Degrees.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p611_altitude_triangle_perpendicular_collinear_parallel_online_geometry.htm\">Problem ");
document.write("611<\/a><br>");
document.write("Altitude of a Triangle, Perpendicular, Collinear Points, Parallel.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p612_altitude_triangle_perpendicular_congruence_isosceles_online_geometry.htm\">Problem ");
document.write("612<\/a><br>");
document.write("Altitude of a Triangle, Perpendicular, Congruence.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p613_altitude_triangle_perpendicular_collinearity_online_geometry.htm\">Problem ");
document.write("613<\/a><br>");
document.write("Altitude of a Triangle, Perpendicular, Collinear Points.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p614_parallelogram_diagonal_parallel_triangle_metric_relations.htm\">Problem ");
document.write("614<\/a><br>");
document.write("Parallelogram, Diagonals, Intersecting Lines, Parallel Lines.<br>");
document.write("					<br>");
document.write("");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p615_right_triangle_square_center_quadrilateral_area.htm\">Problem ");
document.write("615<\/a><br>");
document.write("Right Triangle with a Square, Diagonals, Center, Area of Quadrilateral.<br>");
document.write("					<br>");
document.write("");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p616_parallelogram_diagonal_parallel_triangle_metric_relations.htm\">Problem ");
document.write("616<\/a><br>");
document.write("Parallelogram, Diagonals, Intersecting Lines, Parallel Lines.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p617_right_triangle_area_incircle_tangent_hypotenuse.htm\">Problem ");
document.write("617<\/a><br>");
document.write("Right Triangle Area, Incircle, Incenter, Tangent, 90 Degrees.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p618_triangle_area_60_degrees_incircle_tangent.htm\">Problem ");
document.write("618<\/a><br>");
document.write("Triangle Area, 60 Degrees, Incircle, Incenter, Tangent.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p619_triangle_area_30_degrees_incircle_tangent.htm\">Problem ");
document.write("619<\/a><br>");
document.write("Triangle Area, 30 Degrees, Incircle, Incenter, Tangent.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p620_three_rectangles_triangle_angles_online_geometry.htm\">Problem ");
document.write("620<\/a><br>");
document.write("Three Rectangles, Diagonals, Centers, Angles.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p621_two_parallelograms_diagonal_center_parallel_online_geometry.htm\">");
document.write("		Problem 621<\/a><br>");
document.write("Three Rectangles, Diagonals, Centers, Angles.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p622_intersecting_circles_concyclic_points_online_geometry.htm\">Problem 622<\/a><br>");
document.write("Square with Perpendiculars, Transversal, Congruence.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p623_triangle_incenter_excenter_concyclic_points_online_geometry.htm\">Problem 623<\/a><br>");
document.write("Triangle, Incenter, Excenter, Incircle, Excircle, Concyclic Points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p624_triangle_incenter_excenter_similarity_online_geometry.htm\">Problem 624<\/a><br>");
document.write("Triangle, Incenter, Excenter, Incircle, Excircle, Similarity.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p625_triangle_parallel_congruence_angle_bisector_online_geometry.htm\">Problem 625<\/a><br>");
document.write("Triangle, Parallel Lines, Congruence, Angle Bisector.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p626_triangle_incenter_excenter_distance_metric_relation_similarity_online_geometry.htm\">Problem 626<\/a><br>");
document.write("Triangle, Distance from the Incenter to an Excenter.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p627_cyclic_quadrilateral_congruence_concycli_points_online_geometry.htm\">Problem 627<\/a><br>");
document.write("Cyclic Quadrilateral, Congruence, Concyclic Points.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p628_cyclic_quadrilateral_congruence_parallel_online_geometry.htm\">Problem 628<\/a><br>");
document.write("Cyclic Quadrilateral, Congruence, Parallel Lines.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p629_triangle_perpendicular_to_a_side_online_geometry.htm\">Problem 629<\/a><br>");
document.write("Triangle, Perpendicular to Sides, Intersecting Lines, Altitude.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/center\/clawson_point_triangle_orthic_extangents_homothetic_center.htm\">");
document.write("					Problem 630: Clawson Point<\/a>.<br>");
document.write("		Orthic and Extangents Triangles, Concurrent lines.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p631_triangle_exterior_angle_bisector_collinear_online_geometry.htm\">Geometry Problem 631<\/a>.<br>");
document.write("		Triangle, Exterior Angle Bisectors, Collinear Points.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p632_triangle_angle_bisector_exterior_midpoint_collinear_online_geometry.htm\">Problem 632<\/a>.<br>");
document.write("		Triangle, Interior and Exterior Angle Bisectors, Midpoints, Collinear Points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p633_triangle_parallel_lines_online_geometry.htm\">Problem 633<\/a><br>");
document.write("Triangle, Parallel Lines, Intersecting Lines.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p634_right_triangle_altitude_incenter_area_angle_bisector_online_geometry.htm\">Problem 634<\/a><br>");
document.write("Right Triangle, Altitude, Incenters, Areas.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p635_circle_radius_perpendicular_metric_relation_online_geometry.htm\">Problem 635<\/a><br>");
document.write("Semicircle, Diameter, Perpendicular, Inscribed Circle, Radius.<br>");
document.write("					<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p636_tangent_circle_diameter_perpendicular_online_geometry.htm\">Problem 636<\/a><br>");
document.write("Semicircle, Diameter, Perpendicular, Inscribed Circle, Common Tangent.<br>");
document.write("					<br>");
document.write("");
document.write("<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p637_tangent_circle_diameter_perpendicular_arbelo_plane_geometry.htm\">Problem 637<\/a><br>");
document.write("Semicircle, Diameter, Perpendicular, Inscribed Circle, Chord, Tangent, Arbelos.<br>");
document.write("		<br>");
document.write("<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/arbelos_concyclic_points.htm\">Problem 638<\/a><br>");
document.write("Arbelos and Inscribed Circle: Concyclic Points.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p639_tangent_circle_diameter_perpendicular_arbelos_congruence.htm\">Problem 639<\/a><br>");
document.write("		Semicircle, Diameter, Perpendicular, Inscribed Circle, Tangent, Arbelos, Congruence.<br>");
document.write("		<br>");
document.write("					<a href=\"http:\/\/www.gogeometry.com\/ArchBooLem01.htm\">Problem 640<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 1<br>");
document.write("		Tangent circles and parallel diameters.<br>");
document.write("		<br>");
document.write("					<a href=\"http:\/\/www.gogeometry.com\/ArchBooLem02.htm\">Problem 641<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 2<br>");
document.write("					Semicircle, Tangent, Perpendicular, Midpoint.<br>");
document.write("		<br>");
document.write("");
document.write("					<a href=\"http:\/\/www.gogeometry.com\/ArchBooLem03.htm\">Problem 642<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 3<br>");
document.write("					Semicircle, Perpendicular, Arc, Midpoint, Congruence.<br>");
document.write("		<br>");
document.write("					<a href=\"http:\/\/www.gogeometry.com\/ArchBooLem04.htm\">Problem 643<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 4<br>");
document.write("					Semicircle, Circle, Perpendicular, Arbelos, Area.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/ArchBooLem05.htm\">Problem 644<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 5<br>");
document.write("					Semicircle, Circle, Perpendicular, Arbelos, Archimedean Twins.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/ArchBooLem06.htm\">Problem 645<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 6<br>");
document.write("					Semicircle, Circle, Perpendicular, Arbelos, Inscribed Circle.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/ArchBooLem07.htm\">Problem 646<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 7<br>");
document.write("					Square,Inscribed and Circumscribed Circles, Area.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/ArchBooLem08.htm\">Problem 647<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 8<br>");
document.write("					Angle trisection. Neusis construction.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/ArchBooLem09.htm\">Problem 648<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 9<br>");
document.write("					Perpendicular chords, Arcs.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/ArchBooLem10.htm\">Problem 649<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 10<br>");
document.write("					Tangent, Chord, Parallel, Midpoint.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/www.gogeometry.com\/problem\/p650_tangent_circle_chord_perpendicular_diameter.htm\">Problem 650<\/a>.<br>");
document.write("					Tangent Circles, Diameter, Radius, Chord, Perpendicular.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/ArchBooLem11.htm\">Problem 651<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 11<br>");
document.write("					Perpendicular chords, Arcs, Radius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/ArchBooLem12.htm\">Problem 652<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 12<br>");
document.write("					Perpendicular chords, Arcs, Radius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/ArchBooLem13.htm\">Problem 653<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 13<br>");
document.write("					Circle, Chord, Perpendicular, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/ArchBooLem14.htm\">Problem 654<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 14<br>");
document.write("					Salinon, Semicircles, Diameter, Circle, Area.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/ArchBooLem15.htm\">Problem 655<\/a>.<br>");
document.write("					Archimedes Book of Lemmas: Proposition 15<br>");
document.write("					Circle, Inscribed Regular Pentagon, Radius.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p656_triangle_cevian_concurrent_online_geometry.htm\">Problem 656<\/a>.<br>");
document.write("					Triangle, Cevian, Concurrent Lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p657_triangle_incircle_tangent_parallel_online_geometry.htm\">Problem 657<\/a>.<br>");
document.write("					Triangle, Incircle, Tangency Points, Parallel Lines, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p658_triangle_altitude_circle_diameter_online_geometry.htm\">Problem 658<\/a>.<br>");
document.write("					Triangle, Altitudes, Diameter, Circle, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p659_parallelogram_parallel_collinear_online_geometry.htm\">Problem 659<\/a>.<br>");
document.write("					Parallelogram, Parallel Lines, Collinear Points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p660_triangle_circle_diameter_perpendicular_college_geometry.htm\">Problem 660<\/a>.<br>");
document.write("					Triangle, Circle, Diameter, Perpendicular Lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p661_intersecting_circles_center_secant_parallelogram_college_geometry.htm\">Problem 661<\/a>.<br>");
document.write("					Intersecting Circles, Centers, Secant, Parallelogram.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p662_triangle_incenter_orthocenter_circumcenter_angle_college_geometry.htm\">Problem 662<\/a>.<br>");
document.write("					Triangle, Incenter, Circumcenter, Orthocenter, Circle, Angle, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p663_triangle_60_degrees_altitude_angle_perpendicular_bisector_mind_map.htm\">Problem 663<\/a>.<br>");
document.write("					Scalene Triangle, 60 Degrees, Altitude, Angle Bisector, Perpendicular Bisector, ");
document.write("					Concurrent lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p664_triangle_60_degrees_orthocenter_incenter_circumcenter_mind_map.htm\">Problem 664<\/a>.<br>");
document.write("					Triangle, 60 Degrees, Orthocenter, Incenter, Circumcenter, Angles, ");
document.write("					Triangle centers.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p665_intersecting_circles_tangent_secant_angle_mind_map.htm\">Problem 665<\/a>.<br>");
document.write("					Intersecting Circles, Secant, Tangent, Angles, Mind Map.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p666_intersecting_circles_tangent_secant_concyclic_mind_map.htm\">");
document.write("					Problem 666<\/a>.<br>");
document.write("					Intersecting Circles, Secant, Tangent, Concyclic points, Mind Map.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p667_intersecting_circles_tangent_secant_metric_relations_mind_map.htm\">Problem 667<\/a>.<br>");
document.write("					Intersecting Circles, Secant, Tangent, Metric Relations, Mind Map.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p668_right_triangle_parallel_incircles_common_tangent_mind_map.htm\">Problem 668<\/a>.<br>");
document.write("					Right triangle, Incircles, Parallel, Common Tangent, Mind Map.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p669_triangle_circumcircle_midpoint_incenter_collinear_point_mind_map.htm\">Problem 669<\/a>.<br>");
document.write("					Triangle, Circumcircle, Incenter, Midpoint, Collinear points, Mind Map.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p670_triangle_60_degrees_orthocenter_incenter_circumcenter.htm\">Problem 670<\/a>.<br>");
document.write("					Triangle, 60 Degrees, Orthocenter, Incenter, Circumcenter, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p671_triangle_angles_congruence_geometry_problem.htm\">Problem 671<\/a>.<br>");
document.write("					Triangle, Cevian, Angles, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p672_internally_tangent_circles_geometric_mean.htm\">Problem 672<\/a>.<br>");
document.write("					Internally tangent circles, Chord, Tangent, Geometric Mean.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p673_internally_tangent_circles_chord_proportion.htm\">Problem 673<\/a>.<br>");
document.write("					Internally tangent circles, Chord, Tangent, Metric Relations.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p674_triangle_altitude_angles_plane_geometry.htm\">Problem 674<\/a>.<br>");
document.write("					Triangle, Altitude, Angles.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p675-collinear-points-intersecting-circles-45-90-degrees-plane-geometry.htm\">Problem 675<\/a>.<br>");
document.write("					Intersecting Circles, Secant, 45 and 90 Degrees, Collinear Points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p676-circle-diameter-metric-relation.htm\">Problem 676<\/a>.<br>");
document.write("					Circles, Diameter, Tangent, Chord, Metric Relations.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p677-parallelogram-midpoint-diagonal-metric-relation.htm\">Problem 677<\/a>.<br>");
document.write("					Parallelogram, Midpoint, Diagonal, Metric Relations.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p678-simson-line-circumcircle-tangent-parallel.htm\">Problem 678<\/a>.<br>");
document.write("					Triangle, Simson Line, Circumcircle, Tangent, Parallel, Perpendicular, Collinear Points.<br>");
document.write("		<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p679-triangle-circle-median-proportion-geometry-problem.htm\">Problem 679<\/a>.<br>");
document.write("					Triangle, Circle, Median, Proportion.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p680-concentric-circles-radius-metric-relations.htm\">Problem 680<\/a>.<br>");
document.write("					Concentric Circles, Radii, Chords, Perpendicular, Metric Relations.<br>");
document.write("					<br>");
document.write("							<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p681_triangle_gergonne_point_incircle_tangency_point_concurrent.htm\">Problem 681: Gergonne Point<\/a>.<br>");
document.write("					Triangle, Incircle, Tangency points, Concurrent lines, Semiperimeter, Ceva theorem.<br>");
document.write("		<br>");
document.write("		<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p682_triangle_gergonne_points_excircle_tangency_point_concurrent.htm\">Problem 682: Gergonne External Point<\/a>.<br>");
document.write("					Triangle, Excircle, Tangency points, Concurrent lines, Semiperimeter, Ceva theorem.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p683_triangle_nagel_point_excircle_tangency_point_concurrent.htm\">Problem 683: ");
document.write("					Nagel Point<\/a>.<br>");
document.write("					Triangle, Excircles, Tangency points, Concurrent lines, Semi-perimeter, Ceva theorem.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p684_triangle_nagel_point_excircle_incircle_tangency_point_concurrent.htm\">Problem 684: ");
document.write("					Outer Nagel Point<\/a>.<br>");
document.write("					Triangle, Excircles, Incircle Tangency points, Concurrent lines, Semi-perimeter, Ceva theorem.<br>");
document.write("					<br>");
document.write("<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p685_isosceles_100_40_degrees_angle_congruence.htm\">Geometry Problem 685<\/a><br>");
document.write("Isosceles Triangle, 100-40-40 Degrees, Angles, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p686_triangle_excircle_tangent_congruence_college.htm\">Geometry Problem 686<\/a>.<br>");
document.write("					Triangle, Three Excircles, Tangency points, Tangent lines, Semi-perimeter, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p687_triangle_excircle_tangent_concurrency_college.htm\">Geometry Problem 687<\/a>.<br>");
document.write("					Triangle, Three Excircles, Tangency points, Concurrent Lines.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p688_triangle_10_20_30_40_60_degree_measure_polya.html\">Geometry Problem 688<\/a>.<br>");
document.write("					Triangle, Angles, 10, 20, 30, 40, 60 Degrees, Measure, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p689_triangle_excircle_tangent_concurrency_college.htm\">Geometry Problem 689<\/a>.<br>");
document.write("					Triangle, Three Excircles, Tangency points, Tangent lines, Concurrent Lines, Mind Map.<br>");
document.write("					<br>");
document.write("						<a target=\"_top\" href=\"http:\/\/gogeometry.com\/center\/distance_incenter_centroid_formula_sides.htm\">");
document.write("						Problem 690: Distance between the Incenter and the Centroid of a ");
document.write("						Triangle<\/a>.<br>");
document.write("						Formula in terms of the sides a,b,c.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p691_isosceles_triangle_80_80_20_degrees_congruence_college.htm\">Geometry Problem 691<\/a>.<br>");
document.write("					Isosceles Triangle, 80-80-20 Degrees, Angles, Congruence, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p692_quatrefoil_square_inscribed_circles_area_college.htm\">Geometry Problem 692<\/a>.<br>");
document.write("					Quatrefoil, Four Equal Circles and a Circle Inscribed in a Square, Areas, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p693_square_inscribed_circumscribed_circle_area_college.htm\">Geometry Problem 693<\/a>.<br>");
document.write("					Square, Inscribed and Circumscribed Circle, Areas, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p694_triangle_angle_30_degrees_college.htm\">Geometry Problem 694<\/a>.<br>");
document.write("					Triangle, Angles, 30 Degrees, Auxiliary Construction, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p695_triangle_angles_congruence_college.htm\">Geometry Problem 695<\/a>.<br>");
document.write("					Triangle, Angles, Auxiliary Construction, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p696_triangle_angles_congruence_college.htm\">Geometry Problem 696<\/a>.<br>");
document.write("					Triangle, Angles, Auxiliary Construction, Congruence, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p697_square_circle_area_congruence_college.htm\">Geometry Problem 697<\/a>.<br>");
document.write("					Square, Circle, Sector, Segment, Tangent, Inscribed, Congruence, Mind Map, Polya.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p698_quadrilateral_triangle_120_degrees_angle_bisector_plane_geometry.htm\">Geometry Problem 698<\/a>.<br>");
document.write("					Quadrilateral, Diagonal, Angle Bisector, Triangle, 120 Degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p699_equilateral_triangle_circle_inscribed_metric_relations_plane_geometry.htm\">Geometry Problem 699<\/a>.<br>");
document.write("					Equilateral Triangle, Circle, Circular Segment, Midpoint, Metric Relations.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/geometry\/p700_equilateral_triangle_circle_inscribed_metric_relations_plane_geometry.htm\">Geometry Problem ");
document.write("		700<\/a>.<br>");
document.write("					Equilateral Triangle, Circle, Circular Segment, Midpoint of ");
document.write("		a side, Metric Relations.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p701_intersecting_circles_diameter_perpendicular_angle_congruence_plane_geometry.htm\">Geometry Problem ");
document.write("					701<\/a>.<br>");
document.write("					Intersecting Circles, Diameter, Perpendicular, Angles, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p702_triangle_circle_circumcircle_parallel_concyclic_points_plane_geometry.htm\">Geometry Problem ");
document.write("					702<\/a>.<br>");
document.write("					");
document.write("					Triangle, Circumcircle, Parallel, Concyclic Points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p703_triangle_incircle_diameter_congruence_college_geometry.htm\">Geometry Problem ");
document.write("					703<\/a>.<br>");
document.write("					Triangle, Incircle, Tangency point, Diameter, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p704_orthocenter_triangle_altitude_midpoint_perpendicular_college_geometry.htm\">Geometry Problem ");
document.write("					704<\/a>.<br>");
document.write("					Triangle, Orthocenter, Altitude, Midpoint, Perpendicular.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p705_intersecting_circles_diameter_perpendicular_angle_measure_college_geometry.htm\">Geometry Problem ");
document.write("					705<\/a>.<br>");
document.write("					Intersecting Circles, Diameter, Angles, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p706_triangle_cevian_three_circumcenter_concyclic_points_plane_geometry.htm\">Geometry Problem ");
document.write("					706<\/a>.<br>");
document.write("					Triangle, Cevian, Three Circumcenters, Circumcircles, Concyclic Points, Cyclic quadrilateral.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p707_triangle_excenters_angle_plane_geometry.htm\">Geometry Problem ");
document.write("					707<\/a>.<br>");
document.write("					Triangle, Excenters, Angle Bisectors, Angle, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p708_circles_tangent_intersecting_lunes_area_angle_plane_geometry.htm\">Geometry Problem ");
document.write("					708<\/a>.<br>");
document.write("					Circle, Tangent, Intersecting, Lune, Area, Diameter.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p709_parallelogram_midpoint_diagonal_metric_relation_plane_geometry.htm\">Geometry Problem ");
document.write("					709<\/a>.<br>");
document.write("					Parallelogram, Midpoint, Diagonal, Metric Relations, Triangle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p710_parallelogram_midpoint_diagonal_collinear_metric_relation_plane_geometry.htm\">Geometry Problem ");
document.write("					710<\/a>.<br>");
document.write("					Parallelogram, Midpoint, Diagonal, Collinear Points, Metric Relations, Triangle, Similarity, Congruence.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p711_rectangle_midpoint_angle_cyclic_quadrilateral_concyclic_metric_relation_plane_geometry.htm\">Geometry Problem ");
document.write("					711<\/a>.<br>");
document.write("					Rectangle, Midpoint, Angle, Concyclic Points, Cyclic Quadrilateral.&nbsp;<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p712_tangent_semicircles_angles_diameter_perpendicular_plane_geometry.htm\">Geometry Problem ");
document.write("					712<\/a>.<br>");
document.write("					Semicircle, Diameter, Tangent, Perpendicular, Angle Measure.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p713_tangent_semicircles_diameter_incenter_incircle_plane_geometry.htm\">Geometry Problem ");
document.write("					713<\/a>.<br>");
document.write("					Tangent Circles, Diameter, Chord, Tangent, Incenter, Incircle, Triangle.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p714_triangle_parallel_median_ceva_cevian_concurrent_plane_geometry.htm\">Geometry Problem ");
document.write("					714<\/a>.<br>");
document.write("					Triangle, Parallel, Cevians, Midpoints, Median, Ceva Theorem.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p715_triangle_altitude_parallel_circumcircle_angles_plane_geometry.htm\">Geometry Problem ");
document.write("					715<\/a>.<br>");
document.write("					Triangle, Altitudes, Parallel, Circumcircle, Angle, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p716_intersecting_circles_90_degrees_perpendicular.htm\">Geometry Problem ");
document.write("					716<\/a>.<br>");
document.write("					Problem 716. Intersecting Circles, Center, Radius, Perpendicular, 90 Degrees.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p717_intersecting_circles_midpoint_arc_angle_measure.htm\">Geometry Problem ");
document.write("					717<\/a>.<br>");
document.write("					Intersecting Circles, Midpoint, Angle, Measurement.<br>");
document.write("<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p718_intersecting_circles_midpoint_arc_angle_measure.htm\">Geometry Problem ");
document.write("					718<\/a>.<br>");
document.write("					Intersecting Circles, Midpoint, Angle, Measurement.<br>");
document.write("<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p719_incenter_intersecting_circles_midpoint_arc_angle_measure.htm\">Geometry Problem ");
document.write("					719<\/a>.<br>");
document.write("					Incenter, Intersecting Circles, Angle, Measurement.<br>");
document.write("<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p720_excenter_intersecting_circles_midpoint_arc_angle_measure.htm\">Geometry Problem ");
document.write("					720<\/a>.<br>");
document.write("					Excenter, Intersecting Circles, Angle, Measurement.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p721_triangle_altitude_orthocenter_circumcircle_collinearity_math.htm\">Geometry Problem ");
document.write("					721<\/a>.<br>");
document.write("					Triangle, Orthocenter, Circumcircle, Altitude, Collinear points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p722_squares_circles_intersection_collinear_points.htm\">Geometry Problem ");
document.write("					722<\/a>.<br>");
document.write("					Squares, Circumscribed Circles, Collinear points.<br>");
document.write("					<br>");
document.write("					<a target=\"_top\" href=\"http:\/\/gogeometry.com\/problem\/p723_squares_circles_intersection_collinear_points.htm\">Geometry Problem ");
document.write("					723<\/a>.<br>");
document.write("					Squares, Circumscribed Circles, Collinear points.<\/font><\/p>");
document.write("					<\/td>");
document.write("				<\/tr>");
document.write("			<\/table>");
document.write("		<\/div>");
document.write("");