The list of choices is difficult to read from here,
but 8 radians = 458.366 degrees. (rounded)
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An angle of 82 degrees would be complementary to an angle of 8 degrees. 82 + 8 = 90
1080/8 = 135 degrees
Each exterior angle measures 8 degrees
The measure of 1 exterior angle of a regular 8-sided polygon is equivalent to 45 degrees. Hope I helped! :)
360 divided by the number of side is the measure of the exterior angle. 360 divided by the exterior angle measure is equal to the number of sides. 360/45=8