Assertion: octahedron's triangle | /r/CapableOf | represent its four vertices
Facets:
Source sentences:
text: (Likewise, of course, the cuboctahedron can simply be seen as a sort of "expanded" tetrahedron, with four of its eight triangular faces representing the original four faces of an inner tetrahedron, the remaining four triangles representing its four vertices, and the square faces representing its edges.)