k = 2.3 (slider from -5 to 5, step 0.1)
A_1 = (2.7151413808402967, 9.38827425613141)
B_1 = (7.256003467160496, 9.38827425613141)
C_1 = (13.848985919413861, 23.09818478598278)
O = (7.648962686168975, 18.033377074317944)
A = (15.46448493089316, 23.229171192318944)
B = (18.2588615993979, 14.322095561460094)
C = (21.227886809684183, 19.64887608579725)
đa giác1, c, a, b = Polygon(A, B, C)
A' = Dilate(A, k, O)
B' = Dilate(B, k, O)
C' = Dilate(C, k, O)
đa giác1', c', a', b' = Polygon(A', B', C')
d = Segment(A, O)
e = Segment(A', A)
f = Segment(C', C)
g = Segment(C, O)
h = Segment(B', B)
i = Segment(B, O)