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Recreational Mathematics
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Demonstrations 21  40 of 989
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
Slicing a OneSided Polyhedron
Playing with Dots
Biggest Little Polyhedron
Consecutive Smooth Numbers
Koman Surfaces
The FourRunner Problem
Pandiagonal Magic Squares of Order Five
Three Crossings Puzzle
Folding a Strip of Paper to Make an nGon
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