a = 0 (slider from 0 to 4, step 1)
v = (11.110909090909093, -9.569090909090903)
N = (21.03818181818182, -4.06)
p = Line(v, N)
S_1 = (11.929090909090911, -3.9509090909090876)
g = OrthogonalLine(S_1, p)
T = Intersect(p, g)
k_1 = Circle(S_1, T)
A = (18.82, -9.150909090909085)
f = OrthogonalLine(T, p)
h = LineBisector(T, A)
S_2 = Intersect(f, h)
k_2 = Circle(S_2, A)