What is the sum of the measures of the interior angles of a 12-gon?
Answer
1
1620°
1
1800°
1
1980°
2
2160°
Explanation
The sum of the interior angles of an n-sided polygon is (n − 2) × 180°. For a 12-gon, (12 − 2) × 180° = 10 × 180° = 1800°, so the correct choice is 1800°.
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