Assertion: tetrahedron's dual | /r/HasProperty | congruent
Facets:
value: to the original polyhedron
type: LOCATION
value: to the original
type: OTHER
Source sentences:
text: Actually, the dual of a tetrahedron is congruent to the original when inscribed in the same sphere.
text: Some polyhedra are self-dual, meaning that the dual of the polyhedron is congruent to the original polyhedron.