A = (6, 14)
B = (6, 9)
C = (11, 9)
D = (11, 14)
q1, a, b, c, d = Polygon(A, B, C, D)
f = Segment(A, C)
E = Point(d)
t1, c_1, e, b_1 = Polygon(E, B, C)