The sum of interior angle ( Sum-of-interior-angles-n-gon) of n-gon is:
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Interior angles of a triangle have a sum of 180 degrees.
A rhombus is a quadrilateral, so the sum of its interior angles is 360o.
(number of sides -2)*180 = sum of interior angles.
The interior angles sum to 180*(N - 2) degrees.The interior angles sum to 180*(N - 2) degrees.The interior angles sum to 180*(N - 2) degrees.The interior angles sum to 180*(N - 2) degrees.
The sum of the interior angles is 8x180 degrees or 1440 degrees. The sum of the exterior angles is always 360 degrees.