A = (-0.98, 0.3)
B = (2.38, 0.32)
a = Segment(A, B)
b = OrthogonalLine(A, a)
C = Point(b)
poli1, b_1, c, a_1 = Polygon(C, A, B)
α = Angle(B, A, C)
β = Angle(B, A, C)
γ = Angle(C, B, A)
δ = Angle(A, C, B)