Assertion: tetrahedron's side | /r/CapableOf | connect the base
Facets:
value: to the apex
type: TRANSITIVE-OBJECT
Source sentences:
text: As you can see from the illustration below, the tetrahedron has a triangular base (any one of the tetrahedron's four faces can be designated to be the base), and three triangular sides that connect the base to the apex.