B = (117.14998662736197, 56.99499970180568)
O = (36.84176193594736, 144.67011355698062)
X = (124.35249844020449, 145.72445977992348)
a = Segment(O, X)
Y = (99.39963783055687, 197.73887344510442)
b = Segment(O, Y)
α = Angle(X, O, Y)
U = (170.04083476772828, 145.0215622979616)
I = (250.87404519334734, 146.07590852090445)
c = Segment(U, I)
V = Rotate(U, -1.0 * α, I)
F' = Rotate(I, -1.0 * α, I)
c' = Segment(V, F')
β = Angle(V, I, U)