Definition
Octagon (noun):
A flat, two-dimensional geometric shape with eight straight sides and eight angles, typically with all sides and angles equal in a regular octagon.
Etymology
From Late Latin octagonum, derived from Ancient Greek ὀκτάγωνον (oktágōnon):
- ὀκτώ (októ) = eight
- γωνία (gōnía) = angle or corner
Literally meaning “eight-angled figure”.
Origin
- Language of origin: Ancient Greek → Latin → Middle French/English.
- Cultural origin: Used in geometry since classical Greek mathematics to describe eight-sided polygons.
