A = (-3, 0)
C = (1, 3)
S: (x(C), y(A))
C' = Mirror(C, A)
B = Mirror(A, S)
D = Mirror(C, S)
a2 = Segment(A, B)
c = Circle(C, a2 / 2)
E, F = Intersect(c, a2)
e = Ellipse(E, F, C)
d = Ellipse(E, F, C)