H = (6, 0)
A = (3, 0)
c = Circle(A, H)
B = Point(c)
C = Point(c)
e = CircleArc(A, C, B)
d = CircleArc(A, B, C)
f = Segment(B, C)
E = Point(d)
D = Point(e)
g = Segment(D, E)
F = Intersect(f, g)
h = Segment(A, F)
α = Angle(A, F, D)
β = Angle(D, F, C)
γ = Angle(D, F, B)
G = (-5.154296762241806, -4.427214527546953)