O = (4.264627875507442, -0.6255751014884969)
B = (7.981353179972936, -3.372719891745601)
c = Circle(O, B)
A = Point(c)
a = Ray(A, O)
A' = Intersect(c, a, 2.0)
b = Segment(A, O)
d = Segment(O, A')