I am gonna read this chapter from Subject APM & you'll listen to the Up and Reels Result in up to Kopplaner concurrent forces, Divided into methods Triangle Law of Forces & Parallelogram Law of Forces In parallelogram law of forces, the law states If two Kopaner concurrent forces are represented by two adjacent sides of parallelograms in terms of magnitude and direction. Then the resultant of the two forces is given by the diagonal of the parallelogram, passing through same reference point. P and Q are given Kopenhagen-Kagan forces now start constructing a parallelogram in which sides AB and AC shall represent forces P and Q respectively. The technique for drawing side A, B & A, C shall be same as used earlier to represent magnitude and direction. Only difference being that lines are not drawn in order but from same point after drawing sides AB and AC parallelogram is completed by drawing lines BD and CG R as per parallelogram law the diagonal area shall represent resultant in terms of magnitude and direction. the diagonal concern is 80 and not tensed. hence out of two diagonals that diagonal represents the resultant which passes through starting reference point which is point a the parallelogram law of forces has been explained about and you