A = (-3, 4)
B = (-2, 1)
a = Segment(A, B)
C = (-2, 2)
D = (1, 1)
b = Segment(C, D)
E = (4, 3)
c = Segment(D, E)
F = (6, 1)
d = Segment(E, F)
G = (1, 2)
H = (-3, 5)