Subtract 2 from the number of sides and multiply that by 180 degrees. (n-2)×180°
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The exterior angles of any polygon add up to 360.
A quadrilateral is the only polygon whose interior angles add up to 360 degrees.
The exterior angles of polygon shapes add up to 360 degrees
The exterior angles of any polygon add up to 360 degrees
The interior angles of a 17 sided polygon add up to 2700 degrees