QUADRILATERALS | PARALLELOGRAM | A diagonal of a parallelogram divides it into two congruent triangles., In a parallelogram opposite sides are equal, The opposite angle of a parallelogram are equal., In a parallelogram, the bisectors of any two consecutive angles intersect at right angle., The diagonals of a parallelogram bisect each other., In a diagonal of a parallelogram bisects one of the angles of the parallelogram; it also bisects the second angle., The angle bisectors of a parallelogram form a rectangle.