B_1 = (6.88, -0.32)
C = (5.22, -0.44)
O = (-58.689958925630435, 22.497997345406336)
B_2 = (-20.200435411268916, -3.253986013123313)
c = Circle(O, B_2)
A = Point(c)
B = Point(c)
d = CircleSector(O, B, A)
α = Angle(B, O, A)
n = CircleArc(O, B, A)