In dictionaries:
Octagonal prism
In geometry, the octagonal prism is a prism comprising eight rectangular sides joining two regular octagon caps.
Octagonal number
In mathematics, an octagonal number is a figurate number that gives the number of points in a certain octagonal arrangement.
Octagonal tiling
In geometry, the octagonal tiling is a regular tiling of the hyperbolic plane.
Centered octagonal number
A centered octagonal number is a centered figurate number that represents an octagon with a dot in the center and all other dots surrounding the center dot in successive octagonal layers..
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