Koordinater til en vektor u bestemmes ud fra
start- og slut-punktets koordinater.

A = (1.244140013557652, 2.355728107475194)
B = (8.876818882110067, 5.030170703149071)
u = Vector(A, B)
C: (x(B), 0.0)
D: (0.0, y(B))
koordinat_x: x(B) - x(A)
koordinat_y: y(B) - y(A)
E: (x(B), y(A))
F: (x(A), y(B))
c = Segment(F, A)
d = Segment(E, A)
a = Segment(F, B)
b = Segment(B, E)
G: (x(A), 0.0)
H: (0.0, y(A))
e = Segment(H, A)
f = Segment(C, E)
g = Segment(A, G)
h = Segment(D, F)