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Question
Find the measure of each angle of a regular polygon of 20 sides?
Sum
Solution
We know that, the sum of interior angles of an n polygon = (n – 2) × 180°
Here, n = 20, then
Sum = (20 – 2) × 180°
= 18 × 180°
= 3240°
∴ The measure of each interior angle = `3240^circ/20` = 162°
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