2019
Mathematics
67ca00ce0c643c71d77dee1f
Each of the interior angles of a regular polygon is 140°. Calculate the sum of all the interior angles of the polygon.
A.
1080°
B.
1260°
C.
2160°
D.
1800°
Correct Answer: 1260°
Explanation
Since each interior angle = 140°; Each exterior angle = 180° - 140° = 40° Number of sides of the polygon = 360°/40° = 9 Sum of angles in the polygon = 140° x 9 = 1260°
Since each interior angle = 140°; Each exterior angle = 180° - 140° = 40° Number of sides of the polygon = 360°/40° = 9 Sum of angles in the polygon = 140° x 9 = 1260°THIS WEEK's
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