M

k₁(M,r_1)

k₂(M,r_2)

A = Intersect(xAxis, yAxis)
B = Point(xAxis)
c = Circle(A, B)
C = Point(xAxis)
d = Circle(A, C)
D = Point(c)
u = Vector(A, D)
E = Point(d)
v = Vector(A, E)