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(oc-tag-o-nal) 4 syllables

Definition

adjective. having eight sides and eight angles.

Example Sentence

The octagonal building looked very unusual.

More Example Sentences

She drew an octagonal figure in art class.

Synonyms

eight-sided; polygonal

Antonyms

rectangular

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octagonal
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Rhymes

  • diagonal
  • hexagonal
  • octagonal
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