Is there a picture? I don't know how to answer without the actual problem. Sorry,
Answer with explanation:
A Quadrilateral is a Parallelogram, if any of this is possible in a Quadrilateral
1. One Pair of Opposite Sides are equal and Parallel.
2.Opposite sides are equal.
3. Diagonals Bisect each other.
4. One Pair of Opposite sides are parallel and Opposite angles are equal.
5. Opposite sides are Parallel.
Definition of parallelogram.
⇒⇒All quadrilaterals are parallelograms.
If both pairs of opposite sides are equal.
