Question

Question #a2c15

Answer 1

No, it can not have only 3 right angles.

Explanation:

A trapeziod is a quadrilateral, and their internal angles add to 360 degrees. If 3 angles are equal to 90 degreea, the last angle is 360 - 90(3) = 360 - 270 = 90. Therefore if three angles are 90, the last one must be as well.