Decagonal bipyramid

Short description: Bipyramid with 20 faces

Decagonal bipyramid

Type| bipyramid
Faces| 20 triangles
Edges| 30
Vertices| 12
Schläfli symbol| { } + {10}
Coxeter diagram|

Symmetry group| D10h, [10,2], (*2.2.10), order 40
Rotation group| D10, [10,2]+, (2.2.10), order 20
Dual polyhedron| Decagonal prism
Face configuration| V4.4.10
Properties| convex, face-transitive

In geometry, a decagonal bipyramid is one of the infinite set of bipyramids, dual to the infinite prisms. If a decagonal bipyramid is to be face-transitive, all faces must be isosceles triangles. It is an icosahedron, but not the regular one.

## Images

It can be drawn as a tiling on a sphere, and represents the fundamental domains of [5,2], *5.2.2 symmetry.

## See also

## External links

* Weisstein, Eric W.. "Dipyramid". http://mathworld.wolfram.com/Dipyramid.html.
* Virtual Reality Polyhedra The Encyclopedia of Polyhedra
* VRML models <10>
* Conway Notation for Polyhedra Try: dP10

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