B

C

A = (4, 1)
B = (4, 4)
C = (8, 4)
poly1, c, a, b = Polygon(A, B, C)
D = (1, 4)
E = (4, 6)
F = (11, 4)
G = (11, 0)
H: (4, 4)
I = (8, 4)
poly2, d, h, e = Polygon(H, E, D)
poly3, i, f, g = Polygon(F, G, I)