PC_4

A': (1.16611, 1.18031)
B': (4.82413, 2.2365)
f = Line(A', B')
C' = Point(f)
s = (10.295696991834896, 0.3273259723365189)
g = Line(A', s)
h = OrthogonalLine(B', g)
B = Intersect(g, h)
c = Circle(B, A')
C = Intersect(c, g, 2)
i = Line(C, C')
D_{1} = Intersect(h, i)
j = Line(A', D_{1})
d = Circle(C, B)
D = Intersect(d, g, 2)
k = Line(D, D_{1})
D' = Intersect(f, k)