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.