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Geometry
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Demonstrations 2341  2360 of 2730
Einstein's Most Excellent Proof
Circles & Triangles
FourColor Maps
Villarceau Circles
Pythagorean Analogs for Similar Triangles
Wittenbauer's Parallelogram
Tension in a Hanging Chain
Delannoy Path Exhaustion Diagonal
Symbolon Hemisphere
An IMO Triangle Problem
Lattices in Perspective
Number of Normals to a Curve
Envelope of Two Families of Plane Curves
Circumcircle and Incircle of a Triangle
Weitzenböck's Inequality
Pinwheel Tiling
Rolling a Circle on a Parabola
OneSided Polyominoes
Relationship between Sine and Tangent
Geodesate
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