In geometry, an Archimedean solid is one of 13 convex polyhedra whose
faces are regular polygons and whose vertices are all symmetric to each other.
They were first enumerated by Archimedes. They belong to the class of convex
uniform polyhedra, the convex polyhedra with regular faces and symmetric
vertices, which is divided into the Archimedean solids, the five Platonic
solids (each with only one type of polygon face), and the two infinite
families of prisms and antiprisms. The pseudorhombicuboctahedron is an extra
polyhedron with regular faces and weakly vertices, but it is not generally
counted as an Archimedean solid. An even larger class than the convex uniform
polyhedra is the Johnson solids, whose regular polygonal faces do not need to
meet in identical vertices.