A

P'

A

P = (1, 9)
B = (-1, 9)
C = (-1, 7)
D = (0, 7)
E = (0, 4)
F = (2, 4)
G = (2, 8)
H = (1, 8)
poly1, a, b, c, d, e, f, g, h = Polygon(P, B, C, D, E, F, G, H)
Q = (6, 9)