# Bicone

A **bicone** or **dicone** (*bi- *comes from Latin,* di-* from Greek) is the three-dimensional surface of revolution of a rhombus around one of its axes of symmetry. Equivalently, a bicone is the surface created by joining two congruent right circular cones base-to-base.

A bicone has circular symmetry and orthogonal bilateral symmetry.

## Geometry

For a circular bicone with radius *R* and height center-to-top *H*, the formula for volume becomes

For a right circular cone, the surface area is

- where is the slant height.

## Related polyhedra

A *bicone* can be seen as a polyhedral limiting case of an n-gonal bipyramid where *n* approaches infinity. It can also be seen as a dual of a cylinder as an infinite-side prism.[1]

Polyhedron | |||||||||
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Coxeter | |||||||||

Tiling | |||||||||

Config. | V2.4.4 | V3.4.4 | V4.4.4 | V5.4.4 | V6.4.4 | V7.4.4 | V8.4.4 | V9.4.4 | V10.4.4 |

## See also

## References

## External links

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