Question

In quadrilateral MNOP, 14 years ago

Answer 1

4)
Since we've established before that a square can be a rhombus or a parallelogram, the criteria that two adjacent angles must be equal holds for both. This shape can be a trapezoid in the special case where one pair of sides is congruent and parallel and the other is congruent but creates a shape such that opposite angles are supplementary and adjacent angles are congruent.