An octagon is a shape most people can recognize right away; it has eight equal length sides and eight equal angles. You need a ruler, a protractor, a pencil and a piece of paper to construct an octagon.

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An octagon has eight interior angles. Octagons have eight interior angles because they have eight sides. Each side must create an angle with an adjacent side to create a closed figure.

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The name of an eight-sided shape is an octagon. In addition to the eight sides, the octagon also has eight vertices and eight interior angles. The interior angles add up to 1080 degrees.

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An eight-sided shape is known as an octagon. Octagons are flat shapes with eight straight sides.

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An octagon is any closed shape with eight straight sides. In a regular octagon, unlike an irregular octagon, all the sides are equal in length. Irregular octagons can look completely different from one another.

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A trapezoid is a four-sided shape that has four interior angles. All quadrilaterals are defined by having four sides, four corners and four angles.

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A shape with six corners, more often called angles, is a hexagon. It also has six sides. A hexagon is a type of polygon.

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