A pentahedron is a type of polyhedron that has five faces. The term is derived from the Greek prefix "penta-", meaning five, and "hedron," which refers to a face or surface. In three-dimensional geometry, the most common type of pentahedron is the triangular prism, which has two triangular faces and three rectangular faces. Other forms of pentahedra can include various combinations of face shapes as long as the total number of faces equals five.
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