A_1 = (-10, 1)
S = (-6.864086283227036, 1.3587581573538794)
A = (-10, 0.6)
f = Line(A, S)
g = OrthogonalLine(S, f)
α_1 = Angle(f, g)
M = Point(g)
c = Circle(M, A)
h = Line(A, M)
B_1, B = Intersect(c, h)
D_1, D = Intersect(c, g)
d = Semicircle(A, B)
i = Segment(A, B)
F, C = Intersect(d, f)
j = Segment(A, C)
k = Segment(D, M)
l = Segment(D, C)
α = Angle(M, A, C)
β = Angle(D, C, A)