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 ...

A good example of this are the metal dodecahedrons (twelve-sided shape) which have been found ... of metal alloy (e.g. bronze), are usually a dodecahedron but sometimes different (e.g. an ...

Though he'd never seen one in person, Rob Evershed, a member of the group, recognized the hollow, rounded object as a Roman dodecahedron. Everyone started Googling on their phones. Work stopped as ...