size(700);
void drawcir(pair base,int parts) {
	draw(circle(base,1),linewidth(0.5mm));
	for(int i=0;i<parts;i=i+2){
		filldraw(base--arc(base,1,(360/parts)*i,(360/parts)*(i+1))--cycle,black);
	}
}
drawcir((1,1),8);
drawcir((1,3.2),16);
drawcir((1,5.4),32);