polyhedron with six parallelograms faces, because its pairs of opposite faces are congruent; a rhombohedron, as a special case of a parallelepiped with six rhombi faces, because the interior angle of all of the faces is right; and a trigonal trapezohedron, a polyhedron with congruent quadrilateral faces, since its square faces are the special cases of rhombi.

The cube is a non-composite or an elementary polyhedron.