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What is the sum of the interior angles in a hendecagon

User Veeti
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A hendecagon is an 11 sided polygon. Each internal angle of a regular hendecagon = 147.27 o . The sum of interior angles of a hendecagon = (n - 2) * 180o = (11 - 2) 180o = 1,620o.
User Nhydock
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11 sides of the hendecagon.
User Jhenninger
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