Question

The diagonals of a parallelogram must ________________.
be congruent
be parallel
be perpendicular
bisect each other

Answer 1

the last

Answer 2

Certain parallelograms have diagonals that are perpendicular (e.g. a square and rhombus), but all you can really say is that they bisect each other for the general parallelogram.

Answer 3

I'm wrong. Jhonyy9 is right.

Answer 4

And certain parallelograms have diagonals that are congruent as well (e.g. square, rhombus, rectangle)