The sum of the interior angles of a polygon is 20 right angles. How many sides does the polygon have?
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Correct Answer: Option A
Explanation:
The formula for the sum of the interior angles of a regular polygon = (2n - 4) x 90°
Given: Sum = 20 right angles
(2n - 4) x 90° = 20 \times 90°
⇒ 2n - 4 = 20
2n = 24; n = 12.
The formula for the sum of the interior angles of a regular polygon = (2n - 4) x 90°
Given: Sum = 20 right angles
(2n - 4) x 90° = 20 \times 90°
⇒ 2n - 4 = 20
2n = 24; n = 12.