Octagonal prism

In geometry, the octagonal prism is the sixth in an infinite set of prisms, formed by square sides and two regular octagon caps.

If faces are all regular, it is a semiregular polyhedron.

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: