A = (5.041291292583542, 0.15949279421597495)
B = (12.670795102474143, 1.1546454650712694)
a = Segment(A, B)
C = (-0.7969377097675201, -6.541201856209669)
b = Segment(A, C)
c = Line(C, a)
d = Line(B, b)
D = Intersect(c, d)
e = Segment(C, D)
f = Segment(D, B)
g = Segment(A, D)
α = Angle(C, A, D)
β = Angle(D, A, B)
γ = Angle(A, D, C)
δ = Angle(A, B, D)
đa giác1, c_1, d_1, b_1, a_1 = Polygon(C, D, B, A)