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Polygons
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Demonstrations 61  80 of 351
Irregular Tilings
An Example of the BolyaiGerwien Theorem
Lagrange's FourSquare Theorem Seen Using Polygons and Lines
Dissecting an EvenSided Regular Polygon into Rhombuses
Length of the Projection of a Rotating Polygon
Pentahex Puzzles
Paper Size Series A
A Regular Polygon with an Even Number of Sides Is the Union of Rhombuses
The Polar and Bipolar of a Convex Polytope
Theobald's Dissection of a Heptagon to a Triangle
Simple 2Column Polyominoes on the Hexagonal Lattice
Three Hinged Dissections of Squares
Polyform Explorer
The Excentral Triangle and a Related Hexagon
Roulette: A Comfortable Ride on an ngon Bicycle
IsoOptic Curve of a Regular Polygon
Albrecht Dürer's Nonagon of 1525
Albrecht Dürer's Heptagon of 1525
Plato's Shadow Problem
Irreptiles
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