Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsRolling a Tetrahedron over a Deltahedronhttp://demonstrations.wolfram.com/RollingATetrahedronOverADeltahedron/]]>http://demonstrations.wolfram.com/RollingATetrahedronOverADeltahedron/The Golden Rational Tetrahedra in Zomehttp://demonstrations.wolfram.com/TheGoldenRationalTetrahedraInZome/]]>http://demonstrations.wolfram.com/TheGoldenRationalTetrahedraInZome/Meeting Point in a 3D Mazehttp://demonstrations.wolfram.com/MeetingPointInA3DMaze/]]>http://demonstrations.wolfram.com/MeetingPointInA3DMaze/3D Swing-and-Twist Hinged Dissection of One Regular Heptagon into Sevenhttp://demonstrations.wolfram.com/3DSwingAndTwistHingedDissectionOfOneRegularHeptagonIntoSeven/]]>http://demonstrations.wolfram.com/3DSwingAndTwistHingedDissectionOfOneRegularHeptagonIntoSeven/3D Twist-Hinged Dissection of Triangular Prismshttp://demonstrations.wolfram.com/3DTwistHingedDissectionOfTriangularPrisms/]]>http://demonstrations.wolfram.com/3DTwistHingedDissectionOfTriangularPrisms/3D Twist-Hinged Dissection Doubling the Number of Sides of a Polygonhttp://demonstrations.wolfram.com/3DTwistHingedDissectionDoublingTheNumberOfSidesOfAPolygon/]]>http://demonstrations.wolfram.com/3DTwistHingedDissectionDoublingTheNumberOfSidesOfAPolygon/3D Twist-Hinged Dissection of One Regular Pentagon to Fourhttp://demonstrations.wolfram.com/3DTwistHingedDissectionOfOneRegularPentagonToFour/]]>http://demonstrations.wolfram.com/3DTwistHingedDissectionOfOneRegularPentagonToFour/3D Freese's Dissection of a Regular Dodecagon into Two Squareshttp://demonstrations.wolfram.com/3DFreesesDissectionOfARegularDodecagonIntoTwoSquares/]]>http://demonstrations.wolfram.com/3DFreesesDissectionOfARegularDodecagonIntoTwoSquares/3D Twist-Hinged Dissection of One Regular Octagon into Fourhttp://demonstrations.wolfram.com/3DTwistHingedDissectionOfOneRegularOctagonIntoFour/]]>http://demonstrations.wolfram.com/3DTwistHingedDissectionOfOneRegularOctagonIntoFour/Encounters in a Polyhedral Mazehttp://demonstrations.wolfram.com/EncountersInAPolyhedralMaze/]]>http://demonstrations.wolfram.com/EncountersInAPolyhedralMaze/Covering Maze with Tweakshttp://demonstrations.wolfram.com/CoveringMazeWithTweaks/]]>http://demonstrations.wolfram.com/CoveringMazeWithTweaks/Theobald's Heptagon-to-Square Dissection in 3Dhttp://demonstrations.wolfram.com/TheobaldsHeptagonToSquareDissectionIn3D/]]>http://demonstrations.wolfram.com/TheobaldsHeptagonToSquareDissectionIn3D/3D Theobald Decagon-to-Square Dissectionhttp://demonstrations.wolfram.com/3DTheobaldDecagonToSquareDissection/]]>http://demonstrations.wolfram.com/3DTheobaldDecagonToSquareDissection/Theobald's Nonagon-to-Square Dissectionhttp://demonstrations.wolfram.com/TheobaldsNonagonToSquareDissection/]]>http://demonstrations.wolfram.com/TheobaldsNonagonToSquareDissection/Kids' Cryptography with a Key from a Propositional Puzzlehttp://demonstrations.wolfram.com/KidsCryptographyWithAKeyFromAPropositionalPuzzle/]]>http://demonstrations.wolfram.com/KidsCryptographyWithAKeyFromAPropositionalPuzzle/Symmetries of Icosahedron Puzzlehttp://demonstrations.wolfram.com/SymmetriesOfIcosahedronPuzzle/]]>http://demonstrations.wolfram.com/SymmetriesOfIcosahedronPuzzle/Permutation Sortinghttp://demonstrations.wolfram.com/PermutationSorting/]]>http://demonstrations.wolfram.com/PermutationSorting/3D Templates for Mazes on Polyhedral Netshttp://demonstrations.wolfram.com/3DTemplatesForMazesOnPolyhedralNets/]]>http://demonstrations.wolfram.com/3DTemplatesForMazesOnPolyhedralNets/Kids' Cryptography with a Key from a Frieze Patternhttp://demonstrations.wolfram.com/KidsCryptographyWithAKeyFromAFriezePattern/]]>http://demonstrations.wolfram.com/KidsCryptographyWithAKeyFromAFriezePattern/Kids' Cryptography with a Key from a Wallpaper Grouphttp://demonstrations.wolfram.com/KidsCryptographyWithAKeyFromAWallpaperGroup/]]>http://demonstrations.wolfram.com/KidsCryptographyWithAKeyFromAWallpaperGroup/