Assertion: polyhedral pyramid | /r/HasProperty | constructed as regular tetrahedron base
Facets:
value: in a 3-space hyperplane
type: LOCATION
Source sentences:
text: The tetrahedral pyramid is a special case of a 5-cell, a polyhedral pyramid, constructed as a regular tetrahedron base in a 3-space hyperplane, and an apex point above the hyperplane.