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Recreational Mathematics
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Demonstrations 21  40 of 1005
Kakeya Needle Problem
Frederickson's Second Dissection of an Octagon to Five Octagons
Golomb Rulers and Fibonacci Sequences
Frederickson's Hinged Dissection of Five Decagons to One
Lindgren's Symmetrical Decompositions of Regular 2nGons
All 11 Folding Nets of the Regular Octahedron
All 11 Folding Nets of the Cube
Frederickson's Dissection of an Octagon to Five Octagons
Olympic Logos Based on Hanegraaf's Dissection of a Dodecagon to Five Dodecagons
Another Hinged Dissection of One Pentagon to Five Pentagons
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
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Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
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