Assertion: polyhedron's surface | /r/MadeOf | a number of polygonal faces
Facets:
Source sentences:
text: As for a definition of the polyhedron that excludes two polyhedra that touch at a point, try this: Regular Polyhedra http://www.cut-the-knot.org/do_you_know/polyhedra.shtml Definition 5 Polyhedron is a solid (3D) body whose surface consists of a number of polygonal faces subject to two conditions to exclude some "abnormal" cases.