A = (-4.161572269940687, 1.5317830695208858)
B = (4.731267975878512, 1.567354430504163)
đa giác1, a, b, c, d, C, D = Polygon(A, B, 4.0)
e = Segment(C, A)
f = Segment(D, B)
O = Intersect(e, f)