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Discrete Mathematics
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Demonstrations 121  140 of 1039
Minimal Coloring of Platonic Solids
Nearest in a Crowd
The Ray Puzzle
The Geometry of the Steiner Tree Problem for up to Five Points
Tiling the Octahedron and the Plane with Tiling of a Hexagram
Constructing a Steiner Tree for Five Points
Generating the Surreal Numbers
Create Your Own Quick Response Code
0/1Polytopes in 3D
SevenColoring of a Torus
TwistHinged Dissection of a Hexagram to Two Hexagons
Passages Puzzle
Rubik's Cube
Dissecting a Net of a Gyroelongated Square Dipyramid
Dissecting the Net of an Octahedron to the Net of a Tetrahedron
Theobald's Dissection of the Net of a Cube to the Net of a Regular Tetrahedron
Random Key Graph
Tiling with Pentominos
Area Puzzle
Rolling a Cube on a Chessboard
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