A = (-3.7, 1.84)
B = (3.42, 4.38)
C = (9.8, 0.52)
D = (3.68, -0.12)
f = Segment(A, B)
g = Segment(B, C)
h = Segment(C, D)
i = Segment(D, A)
j = Segment(A, C)
k = Segment(B, D)
J = Midpoint(B, D)
I = Midpoint(A, C)