Decahedron

A 10-sided die

In geometry, a decahedron is a polyhedron with ten faces. There are 32300 topologically distinct decahedra,[1][2] and none are regular, so this name does not identify a specific type of polyhedron except for the number of faces.

Some decahedra have regular faces:

The decahedra with irregular faces include:

  1. ^ Gerard Michon: Counting Polyhedra
  2. ^ Sloane, N. J. A. (ed.). "Sequence A000944". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.