somma

O = Intersect(xAxis, yAxis)
A = (2, 5)
B = (5, -1)
u = Vector(O, A)
v = Vector(O, B)
D: A + B
Somma = Vector(O, D)
a = Segment(A, B)
b = Segment(B, D)
c = Segment(D, A)
traslato_w = Vector(A, D)