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Demonstrations 161  180 of 434
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
Center of Mass of a Polygon
A Test for the Convexity of a Quadrilateral
Reflecting a Regular Polygon across Its Sides in the Hyperbolic Plane
Dividing Circles, Rectangles, and Triangles into Equal Pieces
Regular Tilings
Tiling the Hyperbolic Plane with Regular Polygons
Folding a Trapezoid into Two Different Rectangles
MapColoring the Interior Regions Defined by the Diagonals of a Regular Polygon
The Facilities Location Problem
Lemaire's Second Dissection of the Maltese Cross to a Square
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