Decahedron
Wikimedia Commons has media related toDecahedra.
Ingeometry,adecahedronis apolyhedronwith tenfaces.There are 32300topologicallydistinct 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:
- Octagonal prism(uniform 8-prism)
- Square antiprism(uniform 4-antiprism)
- Square cupola(Johnson solid4)
- Pentagonal bipyramid(Johnson solid 13, 5-bipyramid)
- Augmented pentagonal prism(Johnson solid 52)
The decahedra with irregular faces include:
- Pentagonal trapezohedron(5-trapezohedron,antiprism dual) – often used as adieinrole playing games,known as ad10
- Truncated square trapezohedron
- Enneagonalpyramid (9-pyramid)
- Ten of diamonds decahedron- a space-filling polyhedron with D2dsymmetry.
References
[edit]- ^Gerard Michon:Counting Polyhedra
- ^Sloane, N. J. A.(ed.)."Sequence A000944".TheOn-Line Encyclopedia of Integer Sequences.OEIS Foundation.