1 option is false, because it shows that lines QM and PN are parallel.
2 option is false, because it shows that the diagonals of parallelogram have different lengths.
3 option is true, becuase if you find the coordinates of midpoints of both diagonals and these coordinates coincides, then these midpoints are placed in one point on the coordinate plane. This means that diagonals of a parallelogram bisect each other.
4 option is false, because it shows that opposite sides of parallelogram are congruent.
That would be 449 because if you divide them you will get it. So 5*4=20//22-20=2//take down 4=24.//5*4=20//24-20=4//take down 5=45//5*9=45//45-45=0// so that's why it's 449
