O1g/o1g.asy

import graph;

size(100,100);                  // abrameret
defaultpen(9.0);                // vonalvastagsag

draw(Circle((0,0),1.5),red);
draw(arc((0,0),0.9,45,360)--(0,0)--(0,0.3)--(-0.3,0.15)^^(0,0)--(0,-0.3),green);