please help me with the answer to 11, thank you
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c)regular Pentagon with interior 108,exterior 72...
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5 SIDED REGULAR PENTAGON
INTERRIOR 144
EXTERRIOR 36
Remember the interior and exterior angle add up to 180°. Calculate the size of the exterior and interior angle in a regular pentagon . The sum of interior angles in a triangle is 180°. To find the sum of interior angles of a polygon, multiply the number of triangles in the polygon by 180°.
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