In a parallelogram, opposite sides are always parallel.

In a parallelogram, consecutive sides are always parallel.

In a parallelogram, opposite angles are always congruent.

In a parallelogram, opposite angles are always supplementary.

In a parallelogram, consecutive angles are always supplementary.

In a parallelogram, diagonals always bisect each other.

In a parallelogram, diagonals are always congruent.

In a parallelogram, diagonals are always perpendicular.

In a parallelogram, opposite sides are always congruent.

In a parallelogram, consecutive sides are always congruent.