 \vec{ i } 

 \vec{ j } 

 \vec{ u } \; = \; (x;y) \; ≅ \;  \vec{ u } \; = \; x \vec{ i } \; + \; y \vec{ j }    

O = Intersect(xAxis, yAxis)
A_3 = Point(xAxis)
B = Point(yAxis)
u_1 = Vector(O, A_3)
v = Vector(O, B)
C = (0.9735537190082644, 2)
D = (5, 5)
u = Vector(C, D)
A = Translate(O, u)
z = Vector(O, A)
a = OrthogonalLine(A, yAxis)
b = OrthogonalLine(A, xAxis)
e = Line(O, A_3)
f = Line(O, B)
A_2 = Intersect(a, f)
A_1 = Intersect(b, e)
c = Segment(A, A_2)
d = Segment(A, A_1)