Lohistage punkti A mööda suuremat ringjoont. 
Punkt C hakkab jätma jälge:

c: x^(2) + y^(2) = 25
d: x^(2) + y^(2) = 9
A = Point(c)
O = Intersect(xAxis, yAxis)
f = Segment(A, O)
B = Intersect(d, f)
g = Line(A, yAxis)
h = Line(B, xAxis)
C = Intersect(h, g)
i = Segment(A, C)
j = Segment(B, C)