Super, das ist richtig!

A = (0, 0)
B = (0, 3)
C = (2, 3)
D = (2, 0)
Vieleck1, a, b, c, d = Polygon(A, B, C, D)
E = (6, 4)
F = (8, 4)
G = (8, 1)
H = (6, 1)
Vieleck2, e, f, g, h = Polygon(E, F, G, H)
I = (2, 5)
Vieleck3, i, b_1, c_1 = Polygon(B, C, I)
J = (4, 1)
K = (4, -1)
L = (6, -1)
Vieleck4, l, j, k = Polygon(J, K, L)
m = Line(C, D)
M = (6, 1)
N = (6, -1)