| octagon | 1. <geometry> A plane figure of eight sides and eight angles. 2. Any structure (as a fortification) or place with eight sides or angles. Regular octagon, one in which the sides are all equal, and the angles also are all equal. Origin: Gr. Eight-cornered; (for eight) + an angle: cf.F. Cctogone. Source: Websters Dictionary (01 Mar 1998) |
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| octagon | an eight-sided polygon |
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| octagon | of or relating to or shaped like an octagon |
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