Decahedron
Polyhedron with 10 faces
title: "Decahedron" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["polyhedra"] description: "Polyhedron with 10 faces" topic_path: "general/polyhedra" source: "https://en.wikipedia.org/wiki/Decahedron" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Polyhedron with 10 faces ::
::figure[src="https://upload.wikimedia.org/wikipedia/commons/c/c6/10_sided_die.svg" caption="die"] ::
In geometry, a decahedron is a polyhedron with ten faces. There are 32300 topologically distinct decahedra, 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:
- Octagonal prism (uniform 8-prism)
- Square antiprism (uniform 4-antiprism)
- Square cupola (Johnson solid 4)
- Pentagonal bipyramid (Johnson solid 13, 5-bipyramid)
- Augmented pentagonal prism (Johnson solid 52)
Decahedra with irregular faces include:
- Pentagonal trapezohedron (5-trapezohedron, antiprism dual) often used as a die in role playing games, known as a d10
- Truncated square trapezohedron
- Enneagonal pyramid (9-pyramid)
- Ten of diamonds decahedron - a space-filling polyhedron with D2d symmetry
- Chamfered Tetrahedron
References
References
- Gerard Michon: [http://www.numericana.com/data/polyhedra.htm Counting Polyhedra]
- {{cite OEIS. A000944
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