Meaning & use
octagon
A two-dimensional shape with eight straight sides and eight angles.
See it in a sentence
A stop sign is shaped like a regular octagon with equal sides.
The architect designed the pavilion's floor as an octagon to create eight distinct viewing angles.
A note on using this word
In mixed martial arts, the Octagon refers informally to the eight-sided ring used in competitions.
Words with a similar meaning
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