A = (0.92, 3.16)
B = (5.22, 1.46)
a = Line(A, B)
M = (4.5200000000000005, 4)
P = (0.72, 0.96)
b = Line(P, M)
d = OrthogonalLine(M, a)
α = Angle(d, a)
d' = Line(P, a)