Assertion: polyhedron's side | /r/HasProperty | planar
Facets:
Source sentences:
text: A polyhedron is a closed figure with several (planar) sides, and all its sides are planar.
text: A polyhedron is a closed figure with several (planar) sides, and all its sides are planar.
text: A polyhedron is a closed figure with several (planar) sides, and all its sides are planar.
text: A polyhedron is a closed figure with several (planar) sides, and all its sides are planar.