Quesito esame
Author: Ubaldo Pernigo  - www.ubimath.org

A = (4, 1)
B = (4, 10)
C = (8, 10)
D = (8, 1)
E = (4, -2)
poli1, b, a, d, c = Polygon(B, A, D, C)
poli2, d_1, a_1, e = Polygon(A, E, D)
F = (0, 10)
G = Point(yAxis)
poli3, b_1, f, g, e_1 = Polygon(B, F, G, E)