Assertion: dodecahedron's vertex | /r/CapableOf | define cube
Facets:
value: as their convex hull
type: OTHER
Source sentences:
text: The vertices of the two tetrahedra define a cube, and the intersection of the two: an octahedron, which shares the same face-planes as the compound.
text: A stella octangula is a compound of two tetrahedra in dual position and its eight vertices define a cube as their convex hull.