Assertion: octahedron's symmetry | /r/HasProperty | dihedral
Facets:
Source sentences:
text: Octahedron will usually imply regular octahedron with octahedral symmetry, while a (Th) tetragonal bipyramid (or especially square bipyramid), being in the bipyramid family, would more likely to be considered to have only dihedral symmetry.