SOLUTION:
Step 1:
In this question, we are given the following:
Why don’t the properties of parallelograms applied to trapezoids?
Step 2:
The details of the solution are as follows:
A parallelogram cannot be a trapezium as a parallelogram has one pair of opposite sides parallel and equal to each other, while a trapezium has only one pair of opposite sides parallel to each other, not equal.
A trapezium is not a parallelogram because a parallelogram has 2 pairs of parallel sides. But a trapezium only has 1 pair of parallel sides.