# Octagonal bipyramid

Octagonal bipyramid
Type bipyramid
Schläfli symbol { } + {8}
Coxeter diagram
Faces 16 triangles
Edges 24
Vertices 10
Face configuration V4.4.8
Symmetry group D8h, [8,2], (*228), order 32
Rotation group D8, [8,2]+, (228), order 16
Dual octagonal prism
Properties convex, face-transitive

The octagonal bipyramid is one of the infinite set of bipyramids, dual to the infinite prisms. If an octagonal bipyramid is to be face-transitive, all faces must be isosceles triangles.

## Images

It can be drawn as a tiling on a sphere which also represents the fundamental domains of [4,2], *422 symmetry:

## Related polyhedra

Family of bipyramids
2 3 4 5 6 7 8 9 10 11 12 ...
As spherical polyhedra
Dimensional family of omnitruncated polyhedra and tilings: 4.8.2n
Symmetry
*n42
[n,4]
Spherical Euclidean Compact hyperbolic Paracompact
*242
[2,4]
D4h
*342
[3,4]
Oh
*442
[4,4]
P4m
*542
[5,4]
*642
[6,4]
*742
[7,4]
*842
[8,4]...
*∞42
[∞,4]
Omnitruncated
figure

4.8.4

4.8.6

4.8.8

4.8.10

4.8.12

4.8.14

4.8.16

4.8.∞
Coxeter
Schläfli

tr{2,4}

tr{3,4}

tr{4,4}

tr{5,4}

tr{6,4}

tr{7,4}

tr{8,4}

tr{∞,4}
Omnitruncated
duals

V4.8.4

V4.8.6

V4.8.8

V4.8.10

V4.8.12

V4.8.14

V4.8.16

V4.8.∞
Coxeter