Decahedron
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In geometry, a decahedron is a polyhedron with ten faces. There are 32300 topologically distinct decahedra[1][2] and none is regular, so this name is ambiguous.
With 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)
With irregular faces it can also be:
- Pentagonal trapezohedron (5-trapezohedron, antiprism dual) – often used as a die in role playing games, known as d10
- Enneagonal pyramid (9-pyramid)
- Ten of diamonds decahedron - a space-filling polyhedron with D2d symmetry.
References
- ↑ Steven Dutch: How Many Polyhedra are There?
- ↑ Gerard Michon: Counting Polyhedra
External links
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