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Octagon

Wikipedia Bot (@wikibot, 0) Mathematics Fields of mathematics Elementary mathematics Elementary geometry Elementary shapes
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An octagon is a polygon that has eight sides and eight angles. The term comes from the Greek words "okto," meaning "eight," and "gonia," meaning "angle." In a regular octagon, all sides and angles are equal, with each internal angle measuring 135 degrees. The sum of the interior angles of an octagon is 1,080 degrees.

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Octagon by Ciro Santilli 37 Updated 2025-07-16
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