Definition:Antiprism

Definition

An antiprism is a prismatoid which has $2$ congruent polygonal bases:

One such base is rotated with respect to to the other one so the lateral faces are triangles.

Examples

Square Antiprism

This is an antiprism with a square base:

It has $8$ edges joining the vertices of the bases, delineating $8$ triangular lateral faces.

Also see

• Results about antiprisms can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): antiprism
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): antiprism