The sum of the interior angles of any n-sided polygon is always (n - 2) x 180.
Therefore, the sum of the angles of a 23-sided polygon is (23 - 2) x 180 = 3780.
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Use the formula (n - 2)180 to find the sum of the measures of the interior angles of any regular convex polygon, where n is the number of sides. (n - 2)180 = (18 - 2)180 = (16)180 = 2880
The interior angles of a 14 sided polygon add up to 2160 degrees
(22-2)*180 degrees = 20*180 deg = 3600 deg.
To find the sum of the interior angles of a convex 12-sided polygon, you use the formula (n-2)180 n being the number of sides Therefore, (12-2)180 = 10(180) = 1800 degrees So the sum is 1800 degrees I believe this is right, but please correct me if I am wrong.