Sum of the interior angles of a polygon
The interior angles of a polygon with n sides add to (n − 2) × 180°.
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A polygon has 39 sides. What is the sum of its interior angles, in degrees?
Answer: 6660
Find the total of the interior angles of a 13-sided polygon, in degrees.
Answer: 1980
What is the sum of the interior angles of a polygon with 30 sides, in degrees?
Answer: 5040
Tip: The interior angles of a polygon with n sides add to (n − 2) × 180°.
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