A seven sided shape is known as a 'heptagon' if it is two dimensional. If the seven sided shape is three dimensional, then it is called a 'heptahedron.
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A pentagon. Pentagon.
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pentaowenagon.
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A ten sided polygon is a geometric shape called a decagon. All of the angles of a decagon have a total of 1440 degrees. Deca stands for ten.
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