Abi 66, Ha 06

r = 4
k: x² + y² = r²
c = 5
R: (c, 0)
A = Point(k)
A' = Mirror(A, xAxis)
a = Line(A, R)
O = (0, 0)
b = Line(O, A')
P = Intersect(a, b)
loc1 = Locus(P, A)