Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsSolids Whose Cross Sections Have the Same Shapehttp://demonstrations.wolfram.com/SolidsWhoseCrossSectionsHaveTheSameShape/]]>http://demonstrations.wolfram.com/SolidsWhoseCrossSectionsHaveTheSameShape/