A = (44.96038476159761, 21.47393945785823)
B = (31.31863344490461, 2.4176785979417197)
C = (63.59473578697722, 1.9254504576486733)
đa giác1, c, a_1, b = Polygon(A, B, C)
D = (28.78717443768323, 10.152692231118161)
a = Line(D, a_1)
B' = Intersect(a, c)
C' = Intersect(a, b)