Total internal angle is (2n -4)right angles, here it would be (2x30 - 4)right angles
which results in (54 x 90) degrees = 4860 degrees. If the polygon has equal angles then each would be 162 degrees.
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A polygon with 30 sides has a total interior angle measurement of 5040o, with each interior angle measuring 168o.
A regular polygon of 30 sides will each have an exterior angle of 12 degrees and an interior angle of 168 degrees.
Since each interior angle is 150 degrees, each exterior angle is 180-150 = 30 degrees. Therefore, the polygon has 360/30 = 12 sides.
Exterior angle 12 degrees Interior angle 168 degrees
180x(30-2)/30=168