A = (-1, 4)
B = (-1, 0)
C = (8, 1)
poly1, c, a, b = Polygon(A, B, C)
D = Midpoint(c)
E = Midpoint(b)
F = Midpoint(a)
poly2, f, d, e = Polygon(D, E, F)
G = (5, 5)
H = (7, 5)