Question

which characteristic guarantees that a parallelogram is a rectangle? all of the sides are congruent. the opposite sides are parallel. the diagonals are perpendicular bisectors. the diagonals are congruent.

Explanation:

In a parallelogram, if the diagonals are congruent, it is a rectangle. All - sides - congruent makes it a rhombus. Opposite - sides - parallel is a property of all parallelograms. Diagonals being perpendicular bisectors makes it a rhombus.

Answer:

The diagonals are congruent.