Shapes, Space, and Symmetry (Dover Books on Mathematics)

This book explains the structure of the nine regular solids, including the tetrahedron, cube, octahedron, dodecahedron, and icosahedron, plus many semiregular solids. It demonstrates how they can be used to explain mathematics visually rather than by symbol systems, and includes instructions for constructing cardboard models. Over 300 illustrations. 1971 edition.