Ligne d’horizon

α = (-0.1, 3.54)
β = (10.9, 3.54)
a_1 = Line(α, β)
a = (-0.06, -0.96)
b = (-0.06, 2.04)
b_1 = Segment(a, b)
c = (3.12, -0.22)
d = (6.12, -0.22)
c_1 = Segment(c, d)
e = (2.2, 1.12)