A trapazoid has those angles
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No because the 4 interior angles of a quadrilateral add up to 360 degrees
80 degree
If those are the angles of a quadrilateral then the 4th angle is 360-100-80-100 = 80 degrees
If a triangle has a 100 degree angle, it is an obtuse triangle because a 100 degree angle is an obtuse angle. angle > 90 = obtuse angle = 90 = right angle < 90 = acute
100 degrees is an obtuse angle.