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OctagonAn octagon is a geometric two-dimensional shape that has a total of eight sides. All sides on an octagon are convex, i.e. there are no concavities. Stop signs are made in the form of an octagon. A regular octagon is that in which all the sides are of equal length and all angles are the same number of degrees. |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Octagon".