A = (2, 3)
B = (4, 1)
λ = 1.6 (slider from -5 to 5, step 0.1)
C: (5.0 * λ - 1.0, λ)
πολύγ.1, b, a, c = Polygon(A, C, B)
M = Midpoint(C, B)
d = Line(A, M)
N = Midpoint(A, C)
e = Line(B, N)
G = Intersect(e, d)