Numbering lines passing through centre of circle and located at 0,90,180,270 degrees

I have a circle of radius (say 5mm) and centre (say(0,0)). I have drawn 4 lines each at 90 degrees all passing trough centre of circle. I want to print numbers (1,2,3,4) at intersection points of line and clircle on the graph along with the lines. Please help

Answer 1

[Thorsten]

 axis([-2 2 -2 2]), axis equal
 for i = 1:4, text(cos(pi/2*(i-1)), sin(pi/2*(i-1)), int2str(i)), end

[Ajay Goyal]

Thank You Sir