Question

Which of the following shapes is not a parallelogram?

Answer 1

The properties of a parallelogram are as follows:
1) A parallelogram has 2 pairs of parallel edges.
2) The opposite angles in a parallelogram are equal.
3) The opposite edges in a parallelogram are equal.

So, the square, rectangle, and rhombus are parallelograms.
But the trapezoid is not a parallelogram.