Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

• its longer side"
• its shorter side"
• the diagonal of the parallelogram which does not pass through the point of intersection of the forces"
• the diagonal of the parallelogram which passes through the point of intersection of the forces"
• half the sum of the diagonals".