different between alternating vs antiprism

English

alternating

alternating (not comparable)

That alternates.
(mathematics, of a knot) Having a planar diagram whose crossings alternate between "over" and "under" as one travels along the knot.
(mathematics, of a series) Having terms that alternate between positive and negative.
(mathematics, of a multilinear mapping with all arguments belonging to the same space) Whose value is zero when any two adjacent arguments are equal.

anti- +? prism

antiprism (plural antiprisms)

A polyhedron composed of two parallel copies of some particular polygon, connected by an alternating band of triangles.