PLZ HELP Given quadrilateral ABCD, if diagonals AC and BD bisect each other, and angle ABC=91°, but you know nothing about any lengths in the diagram, what special figure MUST ABCD be? A rhombus or a parallelogram? HOW DO YOU KNOW.

Answer:
A parrallelogram
Step-by-step explanation:
It would be a rhombus because when the 2 diagnols bisect eachother, angle b =91, so that means b would be half of that and all angles in rhombus are equal i tink. I am in 7th grade so idk but that is what i think.