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Jay Warendorff
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Demonstrations 1  20 of 272
A Visual Proof of Viviani's Theorem
A Chinese Knight's Tour
An Infinite Knight's Tour
The Extouch and Intouch Triangles of a Triangle
The Knight's Tour
Mixtilinear Incircles
Total Areas of Alternating Subtriangles in a Regular Polygon with 2n Sides
The Sum of Opposite Angles of a Quadrilateral in a Circle is 180 Degrees
Comparing Sorting Algorithms on RainbowColored Bar Charts
Triangle Altitudes and Circumradius
Another Variant of Kosnita's Theorem
The Begonia Point
An Application of the GergonneEuler Theorem
The Excentral Triangle and a Related Hexagon
Four Concyclic Points
Cross's Theorem
A Concurrency from Midpoints of Arcs of the Circumcircle
A Concurrency of Lines through Points of Tangency with Excircles
A Concurrency from Six Pedal Points
Zeckendorf Representation of Integers
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