O = (149.4107936721464, 195.35605098125356)
Y' = (233.05559402561303, 195.35605098125356)
a = Line(O, Y')
X = Point(a)
b = Segment(X, O)
c = Segment(O, Y')
Y = (187.7187064390702, 261.4284142856726)
d = Segment(O, Y)
α = Angle(Y, O, X)
β = Angle(Y', O, Y)