Heptagonal bipyramid
= Heptagonal bipyramid
{wiki=Heptagonal_bipyramid}
A heptagonal bipyramid is a type of polyhedron that can be categorized as a bipyramid based on a heptagonal (7-sided) base. It is formed by taking a heptagon and creating two identical pyramids that are joined at their bases. \#\#\# Properties of a Heptagonal Bipyramid: 1. **Faces**: It has 14 triangular faces. Each of the sides of the heptagon contributes two triangles, one for each pyramid.