In geometry, stellation is the process of extending a polygon (in two dimensions), polyhedron in three dimensions, or, in general, a polytope in n dimensions... More

The stellated octahedron is the only stellation of the octahedron. More

In geometry, a Kepler–Poinsot polyhedron is any of four regular star polyhedra. More

The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the... More

In geometry, the stellated truncated hexahedron (or quasitruncated hexahedron) is a uniform star polyhedron, indexed as U19. More