E = (-9.887932695914548, 0.7285634914038998)
F = (43.079848093802575, 1.1530603988905017)
c = Line(E, F)
O = (-4.888302452183457, -3.37490661429992)
B_1 = (15.487549107173415, -3.3749066142999196)
X = Ray(O, B_1)
b = OrthogonalLine(O, X)
C = Point(b)
Y = Ray(O, C)
A = (-10.642593864779618, -8.23303788886881)
B = (-3.94497599110212, -8.468869504139144)
a = Segment(A, B)
e = Circle(O, a)
M = Intersect(e, Y, 1.0)
f = Circle(M, a * 2.0)
N = Intersect(f, X, 1.0)
g = Segment(M, N)
β = Angle(M, N, O)