Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsPolygon Spiralshttp://demonstrations.wolfram.com/PolygonSpirals/]]>http://demonstrations.wolfram.com/PolygonSpirals/Fractal Tetrahedronhttp://demonstrations.wolfram.com/FractalTetrahedron/]]>http://demonstrations.wolfram.com/FractalTetrahedron/Enlargement in Two Dimensionshttp://demonstrations.wolfram.com/EnlargementInTwoDimensions/]]>http://demonstrations.wolfram.com/EnlargementInTwoDimensions/Goldilocks and the 3 Similar Triangleshttp://demonstrations.wolfram.com/GoldilocksAndThe3SimilarTriangles/]]>http://demonstrations.wolfram.com/GoldilocksAndThe3SimilarTriangles/Pantograph Linkagehttp://demonstrations.wolfram.com/PantographLinkage/]]>http://demonstrations.wolfram.com/PantographLinkage/