What are arithmetic and vector addition? Speed!

What are arithmetic and vector addition? Speed!

Parallelogram rule. When two vectors are combined, a parallelogram is made by taking the directed line segment representing the two vectors as the adjacent edge. The diagonal line between the two adjacent edges represents the size and direction of the resultant vector, which is called the parallelogram rule of vectors. The head of the resultant vector is to the head of one component vector, and the tail of the resultant vector is to the tail of the other component vector