The exterior angle is \(360 \div 5 = 72^\circ ... All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior angle is: interior angle of a ...
Interior angle in a regular polygon = \(\mathbf{\frac{180(n-2)}{n}}\) If the side of a polygon is extended, the angle formed outside the polygon is the exterior angle. The sum of the exterior ...
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