A_1 = (4.631983523547278, 8.008389846896769)
B_1 = (4.177653593633148, -6.904321970284639)
a = Line(A_1, B_1)
A = (-1.2475802753414489, 5.0686079474524055)
B = (2.6008614839311734, 1.701221408088862)
C = (-2.5838447750888855, -3.4567595609362476)
đa giác1, e, c, d = Polygon(A, B, C)
A' = Mirror(A, a)
B' = Mirror(B, a)
C' = Mirror(C, a)
đa giác1', e', c', d' = Polygon(A', B', C')
b = Line(A, A')
f = Line(B, B')
g = Line(C, C')
D = Intersect(a, b)
E = Intersect(a, f)
F = Intersect(a, g)
h = Segment(A, D)
i = Segment(D, A')
j = Segment(B, E)
k = Segment(E, B')
l = Segment(C, F)
m = Segment(F, C')