Not perpendicular I think
Answer:
statement 2 is the inverse of statement 1
A parallelogram is also a rhombus if the diagonal is a bisector of an angle enclosed by the two adjacent sides of a parallelogram.
In our case it means,


Hope this helps.
This is how i worked it out.
Good Luck
Answer:
(4,3)
the distance between x1 and x2 then y1 then y2