The sum of all the interior angles of a polygon is four times the sum of its exterior angles .Find the number of sides in the polygon. Also ,find the measure of each exterior angle and each interior angle.
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Answer:
10 sided polygon
Step-by-step explanation:
The sum of the interior angles of a polygon is four times the sum of its exterior angles.
The sum of the exterior angles of a polygon is always equal to 360°.
The sum of the interior angles of polygon = 180 ( n-2 )
=> 180 ( n-2 ) = 4 × 360
=> n − 2 = 8
=> n = 10
Number of sides in the polygon = 10
Exterior angle = 36°
Interior angle = 18 × 8 = 144°
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