In geometry, the heptagonal antiprism is the fifth in an infinite set of antiprisms formed by two parallel polygons separated by a strip of triangles.
As a result, this polyhedron has 14 vertices, and 14 equilateral triangle faces.
There are 14 edges where a triangle meets a heptagon, and another 14 edges where two triangles meet.
The heptagonal antiprism was first depicted by Johannes Kepler, as an example of the general construction of antiprisms.
[1] This polyhedron-related article is a stub.