a

b

A = (3.5, 0.6)
B = (2.9, -0.6)
a = Line(A, B)
b = OrthogonalLine(A, a)
C = Point(b)
polígono1, c, a_1, b_1 = Polygon(A, B, C)
α = Angle(C, B, A)
β = Angle(B, A, C)