...direction by the two sides of a parallelogram drawn from a point, they are equivalent to a velocity which is represented in magnitude and direction by the diagonal of the parallelogram, passing through the point. Let the two simultaneous velocities be represented by the lines AB and AC,...

...direction by the two sides of a parallelogram drawn from a point, they are equivalent to a velocity which is represented in magnitude and direction by the diagonal of the parallelogram passing through the point. Thus two component velocities AB, AC are equivalent to the resultant velocity...