Geometry Theorems and Problems - Recent Additions (Page 5 of 15) Butterfly theorem proof HTML5 Animation for iPad and Nexus. Geometry Problem 1037. Triangle, Three equal Incircles, Tangent lines, Inradius, Length. Geometry Problem 1036. Triangle, Three equal Incircles, Tangent lines, Inradius, Equal Inradii. Geometry Problem 1035. Triangle, Three equal Incircles, Tangent lines, Equivalent triangles, Equal area. Geometry Problem 1034. Triangle, Three equal Incircles, Tangent lines, Isoperimetric triangles, Equal perimeter. Geometry Problem 1033. Triangle, Angle Obtuse, Circumcircle, Diameter, Area. Geometry Problem 1032: Apollonius Problem LPP. Circle Tangent to One Line and passing through Two Points. Geometry Problem 1031. Trapezoid, Intersecting Circles, Common Chord, Tangent Line, Midpoint, Parallel Lines. Geometry Problem 1030. Quadrilateral, Triangle, Area, Midpoint, Parallel lines. Geometry Problem 1029. Right Triangle, 90 Degrees, Angle, Midpoint, Congruence. Geometry Problem 1028. Right Triangle, Double, Angle, Midpoint, Congruence. Geometry Problem 1027. Triangle, Double, Quadruple, Angle, Congruence. Geometry Problem 1026. Right Triangle, 90 Degrees, Triple Angle, Congruence. Geometry Problem 1025. Triangle, Double, Triple, Angle, Interior Point. Geometry Problem 1024. Contact, Gergonne Triangle, Point on an arc of Incircle, Perpendicular, Distances. Geometry Problem 1023. Triangle, Contact, Gergonne, Product of three distances. Geometry Problem 1022. Circular Sector of 90 Degrees, Squares, Metric Relations. Geometry Problem 1021. Triangle, Cevian, Double Angle, Sides. Geometry Problem 1020. Circle, Tangent, Chord, Perpendicular, Geometric Mean. Geometry Problem 1019. Circle, Diameter, Perpendicular, Chord, Tangent, Sum. Geometry Problem 1018. Right Triangle, Circles, Angle. Geometry Problem 1017. Square, Center, Midpoints, Circle, Concyclic Points, Cyclic Quadrilateral. Geometry Problem 1016. Triangle, 45 Degrees, Area, Triangle, Quadrilateral, Altitude, Bisector. Geometry Problem 1015. Right Triangle, Square, Altitude, Metric Relations. Geometry Problem 1014. Square, Diagonal, 45 Degrees, Angle, Equal Areas, Triangle, Quadrilateral. Geometry Problem 1013. Square, Line through the Center, Perpendicular, Distance, Metric Relations.

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