Octagon
Part of speech: noun
Definition: A polygon with eight sides and eight angles. The arena for mixed martial arts, particularly as trademarked by the UFC.
Hexagon
Part of speech: noun
Definition: A polygon with six sides and six angles.
Octagon as a noun is a polygon with eight sides and eight angles. while Hexagon as a noun is a polygon with six sides and six angles.
Part of speech: noun
Definition: A polygon with eight sides and eight angles. The arena for mixed martial arts, particularly as trademarked by the UFC.
Part of speech: noun
Definition: A polygon with six sides and six angles.
We hope you now know whether to use Octagon or Hexagon in your sentence.