I am confused as to whether this is a parallelogram or a rhombus.
Could someone please help me. I believe it is a parallelogram.
There really isn't enough information here to say. If the pairs of lines AB, CD and AC, BD are parallel then this is a parallelogram. The same holds if AB = CD and AC = BD. This is only a rhombus if AB = BC = CD = DA as well (or the diagonals are perpendicular.)
-Dan