Geometry, Theorems and Problems

Geometry Theorems and Problems - Recent Additions (Page 4 of 15)

Euclidean Geometry

Geometry Problem 1102

Geometry Problem 1102.
Right Triangle, Incircle, Tangency Point, 90 Degree, Cathetus, Metric Relations.

Geometry Problem 1101

Geometry Problem 1101.
Triangle, Parallel Lines, Circle, Incircle, Inradius, Radius, Angle.

Geometry Problem 1100

Geometry Problem 1100.
Triangle, Circle, Centers, Vertex, Radius, Angle.

Geometry Problem 1099

Geometry Problem 1099.
Four Circles, Common External Tangent, Common Internal Tangent, Radius, Metric Relations, Sangaku Japanese Geometry.

Geometry Problem 1098

Geometry Problem 1098.
Circles, Common External Tangent, Common Internal Tangent, Radius, Metric Relations.

Geometry Problem 1097

Geometry Problem 1097.
Quadrilateral, Inscribed Circle, 90 Degree, Angle, Area.

Geometry Problem 1096

Geometry Problem 1096.
Tangent Circles, Common Tangent, Chord, Radius, Center.

Geometry Problem 1095

Geometry Problem 1095.
Externally Tangent Circles, Common Tangent, Radius, Metric Relations.

Geometry Problem 1094

Geometry Problem 1094.
Tangent Circles, Tangent Chord, Radius, Sagitta of Arc.

Geometry Problem 1093

Geometry Problem 1093.
Square, Circle, Tangent, Radius, Side, Sangaku, Japanese Geometry Problem.

Geometry Problem 1092

Geometry Problem 1092.
Equilateral Triangle, Square, Circle, Tangent, 90 Degree, Sangaku.

Geometry Problem 1091

Geometry Problem 1091.
Square, Perpendicular, Distance, Area, Center.

Geometry Problem 1090

Geometry Problem 1090.
Circle, Diameters, Chord, Perpendicular, Metric Relations.

Geometry Problem 1089

Geometry Problem 1089.
Square, Semicircle, Tangent, Triangle, Area.

Geometry Problem 1088

Geometry Problem 1088.
Triangles, Perpendicular, Concurrent Lines.

Geometry Problem 1087

Geometry Problem 1087.
Tangent Circles, Parallel, 15 Degrees, Angle.

Geometry Problem 1086

Geometry Problem 1086.
Square, Circle, Arc, Center, Metric Relations.

Geometry Problem 1085

Geometry Problem 1085.
Intersecting Circles, Concyclic Points, Cyclic Quadrilateral.

Geometry Problem 1084

Geometry Problem 1084.
Circle, Chord, Radius, Diameter, Parallel lines, 45 Degrees, Metric Relations.

Geometry Problem 1083

Geometry Problem 1083.
Semicircle, Diameter, Perpendicular, 90 Degrees, Tangent Line, Metric Relations.

Geometry Problem 1082

Geometry Problem 1082.
Square, Circle, Center, Radius, Side, Isosceles Triangle, 90 Degrees, Area.

Geometry Problem 1081

Geometry Problem 1081.
Equilateral Triangle, Inscribed Circle, Inradius, Tangent Circles, Radius, Tangent Line, Sangaku Japanese Problem.

Geometry Problem 1080

Geometry Problem 1080.
Square, Circle, Tangent, Side, Radius, Metric Relations.

Geometry Problem 1079

Geometry Problem 1079.
Quadrilateral, Isosceles Triangle, Diagonals, Double Angle.

Geometry Problem 1078

Geometry Problem 1078.
Square, Inscribed Circle, Tangent, Triangle, Area.

Geometry Problem 1077

Geometry Problem 1077.
Chain of Equal Tangent Circles, Circular Sector, Area, Sangaku, Sacred Geometry.

Geometry Problem 1076

Geometry Problem 1076.
Square, 45 Degrees, Angle, Sum, Distance.

Geometry Problem 1075

Geometry Problem 1075.
Quadrilateral, Right Triangle, 90 Degrees, Isosceles, Midpoint, Distance.

Geometry Problem 1074

Geometry Problem 1074.
Quadrilateral, Right Triangle, Angles, 15, 22,5, 30, 90 Degrees.

Geometry Problem 1073

Geometry Problem 1073.
Triangle, Altitudes, Exterior Point, Distance, Ratio.

Geometry Problem 1072

Geometry Problem 1072.
Triangle, Altitudes, Interior Point, Distance, Ratio.

Geometry Problem 1071

Geometry Problem 1071.
Arbelos, Semicircles, Diameter, Circle, Perpendicular, Common Tangent, Parallel, Collinear Points, 90 Degrees, Midpoint.

Geometry Problem 1070

Geometry Problem 1070.
Circle, Chord, Equilateral Triangle, Square, Rectangle, Area, Diameter, Perpendicular.

Geometry Problem 1069

Geometry Problem 1069.
Circle, Angles, Auxiliary Lines

Geometry Problem 1068

Geometry Problem 1068.
Obtuse Triangle, Orthocenter, Circumradius, Inradius, Exradii, Distance, Diameter

Geometry Problem 1067

Geometry Problem 1067.
Acute Triangle, Orthocenter, Circumradius, Inradius, Exradii, Distance, Diameter

Geometry Problem 1066

Geometry Problem 1066.
Triangle, Obtuse Angle, Orthocenter, Circumradius R, Inradius r, Exradius r
a, Distance, Diameter.

Geometry Problem 1065

Geometry Problem 1065.
Triangle, Acute Angle, Orthocenter, Circumradius R, Inradius r, Exradius r
a, Distance, Diameter.

Geometry Problem 1064

Geometry Problem 1064.
Triangle, Orthocenter, Altitudes, Circumradius, Sum of the Squares of Sides.

Geometry Problem 1063

Geometry Problem 1063.
Triangle, Orthocenter, Altitudes, Equal Product of the Lengths of Segments.

Geometry Problem 1062

Geometry Problem 1062.
Scalene Triangle with an angle of 60 degrees, Euler Line, Orthocenter, Circumcenter, Distance, Congruence, Transversal.

Geometry Problem 1061

Geometry Problem 1061.
Triangle, Inradius (r), Circumradius (R), Circumcircle, Angle Bisector, Distance from a point to a Line, Perpendicular.

Geometry Problem 1060

Geometry Problem 1060.
Triangle, Incircle, Incenter, Inscribed circle, Tangent, Angle.

Geometry Problem 1059

Geometry Problem 1059.
Triangle, Circumcircle, Orthocenter, Altitude, Perpendicular, Reflection of a Point over a Line, Collinear Points, Simson Line, Congruence.

Geometry Problem 1058

Geometry Problem 1058.
Triangle, Sum of the Areas, Altitude, Perpendicular, Circumcircle, Circle, Diameter.

van Aubel theorem for Tablets, iPad, Nexus, Galaxy

van Aubel's Theorem. Quadrilateral with Squares. Proof with animation for Tablets, iPad, Nexus, Galaxy.

Geometry Problem 1057

Geometry Problem 1057.
Triangle, Area, Circle with Perpendicular Diameters, Tangent, Secant.

Geometry Problem 1056

Geometry Problem 1056.
Triangle, Exradius, Reciprocals of the Altitudes, Multiplicative Inverse, Perpendicular, Excircle, Circle.

Geometry Problem 1055

Geometry Problem 1055.
Triangle, Altitude, Perpendicular, Area, Circumradius, Circle.

Geometry Problem 1054

Geometry Problem 1054.
Triangle, Altitude, Orthocenter, Circumcenter, Perpendicular, Midpoints.

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Home | SearchGeometry | Email | By Antonio Gutierrez
Jul 13, 2014