A = (-0.9547628174515452, 0.520791347024829)
C = (0.7605448221746022, 0.520791347024829)
B = (-0.5043538092346131, 0.9899673972507992)
Tên đa giác1, c, a, b = Polygon(A, C, B)
d = OrthogonalLine(B, c)
D = Point(d)
Tên đa giác2, b_1, a_1, d_1 = Polygon(A, D, C)
e = Segment(B, D)
E = Intersect(c, d_1)
F = Intersect(e, c)
α = Angle(C, F, B)