k = -1.9 (slider from -5 to 5, step 0.1)
O = (11.403906334472216, 15.631959624821684)
A = (2.496830703613364, 16.67985087551096)
B = (7.517976279832815, 9.955882016921434)
a = Segment(A, B)
A' = Dilate(A, k, O)
B' = Dilate(B, k, O)
a' = Segment(A', B')
b = Segment(A, O)
c = Segment(O, A')
d = Segment(B', O)
e = Segment(O, B)