A = (0.76, -0.52)
B = Point(Circle[A, 5.7])
a = Segment(A, B)
D = (10.58, -2.84)
E = Point(Circle[D, 6.7])
b = Segment(D, E)
F = (10.66, -4.06)
G = Point(Circle[F, 7.5])
c = Segment(F, G)
d = Circle(A, c)
e = Circle(B, b)
C = Intersect(d, e, 2)
poly1, b_1, a_1, c_1 = Polygon(A, C, B)
β, γ, δ = Angle(poly1)