The sum of the exterior angles is always 360 degrees.
The sum of the interior angles is (14-2)(180 degrees) or
12x180 which is 2160 degrees.
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360
720
Sum= 2340 Degrees A+
The sum of the measures of the interior angles of any quadrilateral is 360.(S-2)*180 equals the sum.
It measures half the sum of the arcs it intercepts.