Zentrische Streckung

a = 5 (slider from 0 to 5, step 1)
S = (-6.645, 0.41)
k = 1.5 (slider from -5 to 5, step 0.1)
A = (-0.525, -2.56)
C = (6.675, 0.635)
b = Ray(A, C)
B = (2.805, -7.735)
c = Ray(A, B)
α = Angle(B, A, C)
A' = Dilate(A, k, S)
B' = Dilate(B, k, S)
c' = Ray(A', B')
A'_1 = Dilate(A, k, S)
C' = Dilate(C, k, S)
b' = Ray(A'_1, C')
β = Angle(B', A', C')
D = (25.8, -3.19)
E = (30.615, -8.545)
d = Segment(D, E)
D' = Dilate(D, k, S)
E' = Dilate(E, k, S)
d' = Segment(D', E')