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A heptagon is a polygon that has seven sides and seven angles. The term "heptagon" comes from the Greek word "hepta," meaning seven. In a heptagon, the sum of the interior angles is 900 degrees, which can be calculated using the formula \((n - 2) \times 180\), where \(n\) is the number of sides. Heptagons can be regular or irregular.

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  1. Elementary shapes
  2. Elementary geometry
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