books.google.co.jp - Foremost book available on polytopes, incorporating ancient Greek and most modern work done on them. Beginning with polygons and polyhedrons, the book moves on to multi-dimensional polytopes in a way that anyone with a basic knowledge of geometry and trigonometry can easily understand. Definitions of...http://books.google.co.jp/books/about/Regular_Popytopes.html?id=iWvXsVInpgMC&utm_source=gb-gplus-shareRegular Popytopes