Find the measure of each exterior angle of a regular octagon and decagon
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An octagon has 8 sides, so each exterior angle is 360/8 = 45 deg
A decagon has 10 sides so its interior angles add up to 180(10) - 360 = 1440 degrees. Therefore, on average, each interior angle is 144 degrees and each exterior angle is 36 degrees. The sum of the exterior angles is 10 x 36 = 360 degrees.
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