Write a Paragraph Proof

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie