B_1 = (6.74, -2.04)
O = (3.64, 0.9400000000000001)
B_2 = (6.6000000000000005, -0.9)
c = Circle(O, B_2)
A = Point(c)
B = Point(c)
C = Point(c)
a = Segment(A, O)
b = Segment(O, B)
d = Segment(B, A)
α = Angle(A, O, B)
e = Segment(O, C)
A' = Rotate(O, α, O)
m = CircleArc(O, A, B)
D = Point(c)
f = Segment(O, D)
n = CircleArc(O, C, D)
i = Segment(D, C)
j = Distance(d, i)