360/2x = 180/x
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Well, honey, an exterior angle of a polygon is always 360 degrees divided by the number of sides in the polygon. So for a 2x-gon, you just substitute 2x for the number of sides and calculate 360/(2x) to find the measure of each exterior angle. Math is simple when you cut through the fluff, darling.
The measure of the exterior angle.
It is: 180-vertex angle = exterior angle
Exterior angle+interior angle=180 degrees and 180-exterior angle=interior angle
Usually, the measure of an exterior angle of a pentagon is greater.
Each exterior angle will measure 9 degrees