However, when the term is used by itself in solid geometry, "wedge" refers a right triangular prism turned
so that it rests on one of its lateral rectangular faces
(left figure). Harris and Stocker (1998) define a more general type of oblique wedge
in which the top edge is symmetrically shortened, causing the end triangles to slant
obliquely (right figure). The removal of six identical and oppositely-oriented oblique
wedges from a cube gives the endododecahedron.

For an oblique wedge of base lengths and ,
top edge length ,
and height (right figure), the volume
of the wedge is