T = (11, -1)
F: (x(T), y(T) + 100)
r: y = y(T)
j = Ray(T, F)
B = Point(j)
f = Line(B, r)
U = Point(f)
V = Point(r)
N: (x(U) - 5, y(B))
d = Circle(U, N)
s = Line(U, V)
A, E = Intersect(d, s)
c = CircleArc(U, N, A)
N' = Point(c)
h = Ray(N', U)
α = Angle(B, U, V)
g = Segment(N', U)
ζ = Angle(N', U, N)
δ = Angle(N', U, V)
C = Intersect(d, h, 2)
t = Segment(U, C)
D = (-5.043831429013102, -2.706853017711723)
p: y = y(F)
G = Intersect(s, p)
β = Angle(G, U, B)
γ = Angle(G, V, T)