O = (-41.72587207835211, -1.7862674265285907)
c = Circle(O, 4.0)
A = Point(c)
a = Segment(O, A)
B = Rotate(A, 59.99999999999999*°, O)
α = Angle(A, O, B)
b = Segment(O, B)
d = Segment(A, B)
m = CircleArc(O, A, B)