In geometry, the octagonal prism is a prism comprising eight rectangular sides joining two regular octagon caps.
| Name | Ditetragonal prism | Ditetragonal trapezoprism | |
|---|---|---|---|
| Image | |||
| Symmetry | D4h, [2,4], (*422) | D4d, [2<sup>+</sup>,8], (2*4) | |
| Construction | tr or t×, | s2, |
The octagonal prism can also be seen as a tiling on a sphere:
In optics, octagonal prisms are used to generate flicker-free images in movie projectors.
It is an element of three uniform honeycombs:
It is also an element of two four-dimensional uniform 4-polytopes: