Assertion: tetrahedron | /r/HasProperty | cube
Facets:
Source sentences:
text: The Tetrahedron, Cube, Octahedron, Dodecahedron and Icosahedron each have unique characteristics, in that the sides, edges and angles are all congruent.
text: It contains ten tetrahedra, five cubes, an icosahedron and a dodecahedron.