B = (285.07000769079394, 251.93929827918686)
C = (315.6460481561368, 279.3523000757011)
O = (227.4324141699178, 264.2400042135202)
Z = (361.6858332246416, 264.59145295450116)
a = Segment(O, Z)
Y = (338.8416650608797, 311.68558424594875)
b = Segment(O, Y)
α = Angle(Z, O, Y)
A' = Rotate(O, -1.0 * α, O)
O' = Rotate(O, -1.0 * 2.0 * α, O)
Y' = Rotate(Y, -1.0 * 2.0 * α, O)
b' = Segment(O', Y')
β = Angle(Y', O, Z)