Perpendicular Lines, Theorems and Problems - Table of Content  (11) Geometry Problem 838 Parallelogram, Perpendicular, Diagonal, Metric Relations. Geometry Problem 836 Parallelogram, Perpendicular, Diagonal, Similarity, Metric Relations. Geometry Problem 823. Tangent Circles, Diameter, Perpendicular, Chord, Secant, Triangle, Area, Tangency Point. Geometry Problem 803 Right Triangle, Altitude, Angle Bisector, Perpendicular, Measurement. Geometry Problem 802 Scalene Triangle, Median, Perpendicular, Angle, Measurement. Geometry Problem 796 Triangle, Altitude, Measurement of Angles. Geometry Problem 795 Intersecting Circles, Common Chord, Midpoint, Tangent, Secant Line, Perpendicular, 90 Degrees. Geometry Problem 793 Right Triangle, Altitude, Three Incircles, Incenters, Circumcircle, Circumradius, Perpendicular, Distance. Geometry Problem 786 Right Triangle, Altitude, Hypotenuse, Cevian, Perpendicular, Ratio, Metric relations. Geometry Problem 785 Equilateral Triangle, Parallel, Perpendicular. Geometry Problem 784 Triangle, Orthocenter, Midpoint of a side, Perpendicular. Geometry Problem 781 Triangle, Orthocenter, Circumcenter, Vertex, Altitude, Midpoint, Perpendicular. Geometry Problem 779 Triangle, Altitude, Orthocenter, Midpoint, Angle, 90 Degrees, Perpendicular. Geometry Problem 776 Triangle, Isogonal lines, Congruent angles, Perpendicular, Concyclic points, Circle, Center, Midpoint. Geometry Problem 775 Triangle, Isogonal lines, Congruent angles, Perpendicular, Metric Relations. Geometry Problem 762 Parallelogram, Midpoint, Perpendicular, Congruence, Isosceles triangle. Geometry Problem 758 Equilateral Triangle, Cevians, Trisection of sides, Congruence, Perpendicular, 90 Degrees. Geometry Problem 755. Equilateral Triangle, Circumcircle, Chord, Arc, Midpoints, Perpendicular. Go to Page: Previous | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | Next