Question

How do I prove a quadrilateral is a parallelogram

Answer 1

If one pair of opposite sides of a quadrilateral are congruent and parallel, then the quadrilateral is a parallelogram. If — BC — AD and — BC ≅ — AD , then ABCD is a parallelogram. If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram.

Explanation:

its just the answer

Answer 2

There are two criterias for. a quadrilateral being a parallelogram. They are:-

1. One pair of opposite sides are equal and parallel

2. Both pairs of oppoosite sides are parallel.

3. Opposite angles are equal.