Assertion: polyhedron | /r/HasProperty | isogon
Facets:
value: at the same time
type: TEMPORAL
Source sentences:
text: If a polyhedron is at the same time an isogon and an isohedron, then it is a regular polyhedron.
text: If a polyhedron is at the same time an isogon and an isohedron, then it is a regular polyhedron.
text: If a polyhedron is at the same time an isogon and an isohedron, then it is a regular polyhedron.