Octagonal prism
In geometry, the octagonal prism is a prism comprising eight rectangular sides joining two regular octagon caps. Symmetry

Images 
The octagonal prism can also be seen as a tiling on a sphere:

Use 

In optics, octagonal prisms are used to generate flicker-free images in movie projectors. In uniform honeycombs and 4-polytopes 
It is an element of three uniform honeycombs: 

It is also an element of two four-dimensional uniform 4-polytopes:

Related polyhedra

External links
 
 Interactive model of an Octagonal Prism

Zonohedra
Prismatoid polyhedra