 A polyhedron which does not cross itself, such that all of the interior can be seen from one interior point, is an example of a star domain.The visible exterior portions of many self-intersecting star polyhedra form the boundaries of star domains,
but despite their similar appearance, as abstract polyhedra these are different structures.For instance, the small stellated dodecahedron has 12 pentagram faces, but the corresponding star domain has 60 isosceles triangle faces, and correspondingly different numbers of vertices and edges.