Tetradecahedron


A tetradecahedron is a polyhedron with 14 faces. There are numerous topologically distinct forms of a tetradecahedron, with many constructible entirely with regular polygon faces.
A tetradecahedron is sometimes called a tetrakaidecahedron. No difference in meaning is ascribed. The Greek word kai means 'and'. There is evidence that mammalian epidermal cells are shaped like flattened tetrakaidecahedra, an idea first suggested by Lord Kelvin.

Convex

There are 1,496,225,352 topologically distinct convex tetradecahedra, excluding mirror images, having at least 9 vertices.

Examples

An incomplete list of forms includes:
Tetradecahedra having all regular polygonal faces :
Tetradecahedra having at least one irregular face:
Includes an optimal space-filling shape in foams and in the crystal structure of Clathrate hydrate