is an exterior angle of a quadrilateral always sometime or never 90 degrees
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Square = 90 degrees Pentagon = 72 degrees
The sum of the exterior angles of a polygon equals 360.Quadrilateral has 4 exterior angles.360/4=90 for a regular quadrilateral.
No. in a rhombus the angles are not 90 degrees. also in a parallelogram they are not 90 degrees
it's 90 degrees
The answer would be 90 degrees, because the quadrilateral's angles should add up to 360 degrees. 360 - (60 + 120 + 90)= 90 120 + 60 = 180 + 90 = 270 + 90 = 360