A: (0, 0)
B: (10, 0)
C: (10, 5)
D: (0, 5)
q1, a, b, c, d = Polygon(A, B, C, D)
M = Point(c)
Bassin, d_1, X, m = Polygon(A, M, D)
Pelouse, m_1, a_2, b_1 = Polygon(A, B, M)
Bois, b_2, m_2, c_1 = Polygon(M, C, B)