360 degrees
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The sum is two straight angles or 360 degrees.
The sum of the exterior angles of a polygon equals 360.Quadrilateral has 4 exterior angles.360/4=90 for a regular quadrilateral.
The Quadrilateral Sum Conjecture tells us the sum of the angles in any convex quadrilateral is 360 degrees.
Yes. For example a quadrilateral can have angles 80°, 85°, 95°, 100 The only requirement is that the sum of the 4 angles is 360°.
80 The angles in a quadrilateral add up to 360 degrees. So if 3 angles = 280 the fourth angle is 360-280 = 80