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

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Uniform octagonal prism
Type	Prismatic uniform polyhedron
Elements	F = 10, E = 24, V = 16 (χ = 2)
Faces by sides	8{4}+2{8}
Schläfli symbol	t{2,8} or {8}×{}
Wythoff symbol	2 8 | 2 2 2 4 |
Coxeter diagrams
Symmetry	D8h, [8,2], (*822), order 32
Rotation group	D8, [8,2]+, (822), order 16
References	U76(f)
Dual	Octagonal dipyramid
Properties	convex, zonohedron
Vertex figure 4.4.8

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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:

Truncated square prismatic honeycomb	Omnitruncated cubic honeycomb	Runcitruncated cubic honeycomb

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

Runcitruncated tesseract	Omnitruncated tesseract

• Weisstein, Eric W. "Octagonal prism". MathWorld.
• Interactive model of an Octagonal Prism

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