Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsVolume of Cones, Pyramids, and Sphereshttp://demonstrations.wolfram.com/VolumeOfConesPyramidsAndSpheres/]]>http://demonstrations.wolfram.com/VolumeOfConesPyramidsAndSpheres/Reflecting a Lattice of Pointshttp://demonstrations.wolfram.com/ReflectingALatticeOfPoints/]]>http://demonstrations.wolfram.com/ReflectingALatticeOfPoints/Pythagorean Theorem 3Dhttp://demonstrations.wolfram.com/PythagoreanTheorem3D/]]>http://demonstrations.wolfram.com/PythagoreanTheorem3D/Rhombic Triacontahedron Built on a Cubehttp://demonstrations.wolfram.com/RhombicTriacontahedronBuiltOnACube/]]>http://demonstrations.wolfram.com/RhombicTriacontahedronBuiltOnACube/Nets of Polyhedrahttp://demonstrations.wolfram.com/NetsOfPolyhedra/]]>http://demonstrations.wolfram.com/NetsOfPolyhedra/Cross Sections of Regular Polyhedrahttp://demonstrations.wolfram.com/CrossSectionsOfRegularPolyhedra/]]>http://demonstrations.wolfram.com/CrossSectionsOfRegularPolyhedra/Morley's Theoremhttp://demonstrations.wolfram.com/MorleysTheorem/]]>http://demonstrations.wolfram.com/MorleysTheorem/The Statue of Regiomontanushttp://demonstrations.wolfram.com/TheStatueOfRegiomontanus/]]>http://demonstrations.wolfram.com/TheStatueOfRegiomontanus/Triangle Centroidhttp://demonstrations.wolfram.com/TriangleCentroid/]]>http://demonstrations.wolfram.com/TriangleCentroid/Rotating a Lattice of Pointshttp://demonstrations.wolfram.com/RotatingALatticeOfPoints/]]>http://demonstrations.wolfram.com/RotatingALatticeOfPoints/Difference of Cubeshttp://demonstrations.wolfram.com/DifferenceOfCubes/]]>http://demonstrations.wolfram.com/DifferenceOfCubes/Cube Nethttp://demonstrations.wolfram.com/CubeNet/]]>http://demonstrations.wolfram.com/CubeNet/Total Areas of Alternating Subtriangles in a Regular Polygon with 2n Sideshttp://demonstrations.wolfram.com/TotalAreasOfAlternatingSubtrianglesInARegularPolygonWith2nSi/]]>http://demonstrations.wolfram.com/TotalAreasOfAlternatingSubtrianglesInARegularPolygonWith2nSi/The Sum of Opposite Angles of a Quadrilateral in a Circle is 180 Degreeshttp://demonstrations.wolfram.com/TheSumOfOppositeAnglesOfAQuadrilateralInACircleIs180Degrees/]]>http://demonstrations.wolfram.com/TheSumOfOppositeAnglesOfAQuadrilateralInACircleIs180Degrees/Stairs from Cubehttp://demonstrations.wolfram.com/StairsFromCube/]]>http://demonstrations.wolfram.com/StairsFromCube/Simple Three-Letter Cubehttp://demonstrations.wolfram.com/SimpleThreeLetterCube/]]>http://demonstrations.wolfram.com/SimpleThreeLetterCube/Cone, Tent, and Cylinderhttp://demonstrations.wolfram.com/ConeTentAndCylinder/]]>http://demonstrations.wolfram.com/ConeTentAndCylinder/Euler's Polyhedral Formulahttp://demonstrations.wolfram.com/EulersPolyhedralFormula/]]>http://demonstrations.wolfram.com/EulersPolyhedralFormula/Cylinder Hemisphere Conehttp://demonstrations.wolfram.com/CylinderHemisphereCone/]]>http://demonstrations.wolfram.com/CylinderHemisphereCone/Interior and Exterior Angles of Regular Polygonshttp://demonstrations.wolfram.com/InteriorAndExteriorAnglesOfRegularPolygons/]]>http://demonstrations.wolfram.com/InteriorAndExteriorAnglesOfRegularPolygons/