View source for Octagonal bipyramid

{{Infobox face-uniform polyhedron |
  Image_File=Octagonal bipyramid.png |
  Polyhedron_Type=[[Bipyramid|bipyramid]] |
  Coxeter={{CDD|node_f1|2|node_f1|8|node}}<BR>{{CDD|node_f1|2|node_f1|4|node_f1}}|
  Schläfli = { } + {8} |
  Face_List=16 [[Triangle|triangle]]s|
  Edge_Count=24 |
  Vertex_Count=10 |
  Symmetry_Group=''D''<sub>8h</sub>, [8,2], (*228), order 32|
  Rotation_Group  = ''D''<sub>''8''</sub>, [8,2]<sup>+</sup>, (228), order 16 |
  Face_Type=V4.4.8|
  Dual=[[Octagonal prism|octagonal prism]]|
  Property_List=[[Convex set|convex]], face-transitive
}}
The '''octagonal bipyramid '''is one of the infinite set of [[Bipyramid|bipyramid]]s, dual to the infinite [[Prism (geometry)|prisms]]. If an octagonal bipyramid is to be face-transitive, all faces must be [[Isosceles triangle|isosceles triangle]]s. 16-sided dice are often octagonal bipyramids.

== Images ==
It can be drawn as a tiling on a sphere which also represents the fundamental domains of [4,2], *422 symmetry:
:[[File:Spherical_octagonal_bipyramid.png|320px]]

== Related polyhedra ==


==External links==
* {{mathworld | urlname = Dipyramid | title = Dipyramid}}
*[http://www.georgehart.com/virtual-polyhedra/vp.html Virtual Reality Polyhedra] The Encyclopedia of Polyhedra
** [[VRML]] models [http://www.georgehart.com/virtual-polyhedra/vrml/octagonal_dipyramid.wrl <8>]
**[http://www.georgehart.com/virtual-polyhedra/conway_notation.html Conway Notation for Polyhedra] Try: dP8

[[Category:Polyhedra]]
[[Category:Pyramids and bipyramids| ]]



{{Sourceattribution|Octagonal bipyramid|1}}