A = (1, 1)
B = (6, 1)
C = (2, 3)
poly1, c, a, b = Polygon(A, B, C)
D = (2, 1)
E = (1, 3)
F = (6, 3)
poly2, d_1, a_1, d_2, c_1 = Polygon(E, A, B, F)
h_c = Segment(C, D)