A = (1.02, 0.42)
c = Circle(A, 6)
B = Point(c)
d = Circle(B, A)
O, D = Intersect(c, d)
e = Circle(O, A)
M = Point(e)
i = Segment(B, M)
j = Segment(M, A)
α = Angle(B, M, A)
t1, b, a, o = Polygon(A, O, B)