Prima! 
Der Abstand zur Symmetrieachse 
war falsch.

Verschiebe uns:

A = (2, 5.5)
B = (2, 1)
a = Line(A, B)
C = (-1, 1.5)
D = (0, 1.5)
E = (0, 0.5)
F = (-1, 0.5)
Vieleck1, c, d, e, f = Polygon(C, D, E, F)
G = (-1.5, 1.5)
H = (0.5, 1.5)
I = (-0.5, 2.5)
Vieleck2, i, g, h = Polygon(G, H, I)
J = (-0.5, 0.5)
K = (-0.5, -0.5)
L = (-1.5, -0.5)
Vieleck3, l, j, k = Polygon(J, K, L)
M = (-0.5, 0.5)
N = (-0.5, -0.5)
O = (0.5, -0.5)
Vieleck4, o, m, n = Polygon(M, N, O)
P = (4.5, 1.5)
Q = (6.5, 1.5)
R = (5.5, 2.5)
Vieleck5, r, p, q = Polygon(P, Q, R)
S = (5, 1.5)
T = (6, 1.5)
U = (6, 0.5)
V = (5, 0.5)
Vieleck6, s, t, u, v = Polygon(S, T, U, V)
W = (5.5, 0.5)
Z = (5.5, -0.5)
A_1 = (4.5, -0.5)
Vieleck7, a_1, w, z = Polygon(W, Z, A_1)
B_1 = (5.5, 0.5)
C_1 = (5.5, -0.5)
D_1 = (6.5, -0.5)
Vieleck8, d_1, b_1, c_1 = Polygon(B_1, C_1, D_1)