Assertion: polyhedron's polygon | /r/HasProperty | coxeter
Facets:
Source sentences:
text: A polyhedron is said to be regular if its faces and vertex figures are regular (not necessarily convex) polygons (Coxeter 1973, p. 16).
text: John Conway devised a terminology for stellated polygons, polyhedra and polychora (Coxeter 1974).