Octogon vs. Octagon

Octogonnoun

obsolete form of octagon

Octagonnoun

(geometry) A polygon with eight sides and eight angles.

Octagonnoun

The arena for mixed martial arts, particularly as trademarked by the UFC.

Octagonnoun

A plane figure of eight sides and eight angles.

Octagonnoun

Any structure (as a fortification) or place with eight sides or angles.

Octagonnoun

an eight-sided polygon

Octagonnoun

a plane figure with eight straight sides and eight angles.

Octagonnoun

an object or building with an octagonal plan or cross section.

Octagon

In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, ) is an eight-sided polygon or 8-gon. A regular octagon has Schläfli symbol {8} and can also be constructed as a quasiregular truncated square, t{4}, which alternates two types of edges.