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What is the sum of the measures of the interior angles of a nonagon?
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What is the sum of the measures of the interior angles of a nonagon?

User Yesthatguy
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4 votes
1260 degrees is the correct answer. By plugging 9 into 180(n-2), we get 1260.
User TonyLa
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Use the formula to find the sum of the measures of interior angles of a polygon: (n - 2) × 180, where n is the number of sides.

A nonagon has 9 sides, so plug in 9 for n.
(9 - 2) × 180
7 × 180 = 1,260

A nonagon's interior angles add up to 1,260°.

User Kmanzana
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