B_1 = (14.610920129870127, -4.341525792207788)
B_2 = (30.41642838215584, -7.347980606207792)
O = (12.37586347872727, -3.1433071127792216)
C_1 = (16.400850070727273, -8.318289873922081)
c = Circle(O, C_1)
B = Point(c)
A = Point(c)
D = Point(c)
C = Point(c)
a = Segment(B, A)
b = Segment(A, D)
d = Segment(D, C)
e = Segment(C, B)
α = Angle(A, B, C)
β = Angle(C, D, A)
f = Segment(A, C)
g = CircleArc(O, C, A)
n = CircleArc(O, C, A)
m = CircumcircleArc(C, D, A)
k = CircumcircleArc(A, B, C)