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Jay Warendorff
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Demonstrations 201  220 of 271
Fagnano's Problem
Bankoff Circle
Ptolemy's Theorem
Miquel's Pentagram Theorem
Simson's Theorem
Johnson's Theorem
The Perpendicular Bisector of a Chord
Stengel's Theorem
Pedal Triangles of Isogonal Conjugates
The Carpets Theorem
The Midpoint Quadrilateral Theorem
Euler's Theorem for Pedal Triangles
A Theorem about Two Tangent Circles
Crossed Ladders Theorem
Distances from the Centroid
Fuhrmann's Theorem
Six Incircles in an Equilateral Triangle
Hoehn's Theorem
Angle Bisector for an Angle Subtended by a Tangent Line
Bottema's Theorem
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