A = (2.182922872930359, 5.236546883271346)
B = (7.988393669889212, 5.175756613146123)
a = Line(A, B)
D = (0.5415855795493222, 0.8900425693178593)
b = Line(A, D)
C = (9.356174747706742, -0.264972563061389)
c = Line(D, C)
d = Line(C, B)
đa giác1, a_1, c_1, d_1, b_1 = Polygon(A, D, C, B)
E = Point(a)
F = Point(b)
G = Point(d)
H = Point(c)
A1 = Angle(E, A, F)
D1 = Angle(F, D, C)
B1 = Angle(G, B, A)
C1 = Angle(H, C, B)