Some Pictures for Gigoujeu's Theorem

O is the circle (x-4)² + y²=4 ;
O' is the circle x²+y²=1
- A=(2+cos(Pi/7),sin(Pi/7))
- A=(2+cos(2*Pi/7),sin(2*Pi/7))
- A=(2+cos(3*Pi/7),sin(3*Pi/7))
O is the circle (x-3)² + y²=25 ;
O' is the circle x²+y²=1
- A=(3+5*cos(Pi/7),5*sin(Pi/7))
- A=(3+5*cos(2*Pi/7),5*sin(2*Pi/7))
- A=(3+5*cos(3*Pi/7),5*sin(3*Pi/7))