A = (-2.654556028697403, -5.877766742306145)
C = (4.079310377423415, -5.877766742306145)
a = Segment(A, C)
b = OrthogonalLine(A, a)
B = Point(b)
đa giác1, b_1, c, a_1 = Polygon(B, A, C)
α = Angle(C, A, B)
D = (13.002512659425896, -0.13905300704061346)
d = Circle(D, c)
e = Circle(D, b_1)
F = Point(d)
f = Circle(F, a_1)
E = Intersect(e, f, 1.0)
đa giác2, f_1, e_1, d_1 = Polygon(F, D, E)
β = Angle(F, D, E)