**what is a polyhedron?
** Plato's five regular polyhedra
duality in the space |

**the Archimedes' semi-regular polyhedra and the prisms and antiprisms
** animated truncations of the cube, the dodecahedron and the tetrahedron - the snubs
the Catalan's semi-regular polyhedra and the diamonds and antidiamonds
truncation's and extension's sequences - dual morphing - **animated assemblages
** Euler's polyhedral formula - other convex polyhedra - technical information |

**outstanding tetrahedra and tangent spheres
** cuttings of a tetrahedron, of regular pyramids
Hills' tetrahedra (dissections and Dehns' invariant) |

**the Johnson's polyhedra
** canonical polyhedra - Schlegel diagrams
tetrahedrally truncated dodecahedron and stellated icosahedron
the tectohedra and sand heaps - tectohedra constructions
the convex deltahedra and hexahedra ( "cubic" and canonical models )
rhombic polyhedra - spherical polyhedra - Waterman's polyhedra |

**miscellaneous examples: page 1 - page 2** |