are all made out of some kind of metal alloy (e.g. bronze), are usually a dodecahedron but sometimes different (e.g. an icosahedron with 20 faces), yet all are hollow and usually with a single ...

A polygon is regular if it is uniform and its faces are all alike. The regular convex polyhedra ... dodecahedron (twelve sides that are regular pentagons), and the regular icosahedron (twenty sides ...

A 3D shape with regular polygonal faces, meeting at equal angles, is a platonic solid. There are five platonic solids, the tetrahedron, cube, octahedron, dodecahedron and icosahedron. A prism is a ...