A = (-1.5, 2.86)
B = (0.28, 0.96)
a = Segment(A, B)
b = OrthogonalLine(B, a)
B' = Rotate(B, 32.3*°, A)
α = Angle(B, A, B')
c = Line(A, B')
C = Intersect(b, c)
mnogokotnik1, c_1, a_1, b_1 = Polygon(A, B, C)
β = Angle(C, B, A)
γ = Angle(A, C, B)
δ = Angle(C, A, B)
ε = Angle(A, B, C)
ζ = Angle(B, C, A)