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Recreational Mathematics
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Demonstrations 61  80 of 1030
Logos Based on a Dissection of One Pentagon to Five Pentagons
Freese's Dissection of Four Equilateral Triangles into One
NowhereNeat Tilings of the Plane
Four Interwoven Triangles
From the Tether Problem to the Involute of a Circle
The Golden Ratio in Arrangements of Octahedron, Cube, Tetrahedron, and Sphere
Bicolor Towers of Hanoi
Penrose's Train Challenge
The Comet Tile
Irreptiles
Pál Joints
Ultimate TicTacToe
Dissecting a Regular 2ngon into Four Smaller 2ngons
Sliding Cubes
Wheels of Powered Triangles
Rational Distance Problem
Some Irreptiles of Order Greater than 20
Packing Spheres into a Thin Cylinder
Rectangles Reasonably Close to a Given Area
Triangle Radicals
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