Each of the interior angles of a regular po..

Question 1 Report

Each of the interior angles of a regular polygon is 140°. Calculate the sum of all the interior angles of the polygon.

1080°

1260°

2160°

1800°

Answer Details

Since each interior angle = 140°;
Each exterior angle = 180° - 140° = 40°
Number of sides of the polygon = $\frac{360 °}{40 °}$
= 9
Sum of angles in the polygon = 140° x 9
= 1260°

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