The sum of the interior angles of a regular polygon is 1260°. What is the difference between an exterior angle and an interior angle of the polygon ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 100°.
(n - 2) × 180 = 1260
⇒ n - 2 = 7
⇒ n = 9
Total exterior angle = 360°
Total interior angle = 1260°
Difference = (1260 - 360) / 9
= 900/9
= 100°