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Answer:

simple quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure

Step-by-step explanation:

1.)opposite side of a parallelogram are parallel and you can prove that by finding the slope for both lines.

2.) opposite sides of a parallelogram are congruent

3.) diagonals bisect each other

4.)opposite angles are congruent

5.) consecutive angles are supp.