P1 = (0, 36)
P2 = (0.5, 36)
P3: (0.5, -12)
P4: (1.5, -12)
P5: (1.5, 4)
f = Segment(P1, P2)
h = Segment(P3, P4)
P6: (3, 4)
P7: (3, 0)
P8: (4, 0)
g = Segment(P5, P6)
i = Segment(P7, P8)