Mensuration Practice Test 9

Question : 30 of 40

Marks: +1, -0

In a polygon, the sum of the interior angles is double the sum of the exterior angles. The number of sides is:

Solution:

According to the statement, the exterior angle = x
Let the interior angle = 2 x
∠x +∠2x = 180°
3x = 180°
x =

{180}/3

= 6
Polygon has six sides.

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