Assertion: octahedron | /r/HasProperty | mathematical dual
Facets:
value: of the cube
type: OTHER
Source sentences:
text: the octahedron is the mathematical "dual" of the cube (octahedron has 6 vertices and 8 faces, while cube has 6 faces and 8 vertices) "true" octahedron puzzles are built of the same two block types (octahedron and tetrahedron) as the "Pyraminx" puzzles Trivia: Important Note: Although the corner blocks of the "true" Octahedron puzzles look like the "trivial" tips of the Pyramix family, the corner blocks of these puzzles can not be rotated freely!