input global; input myaxes; beginfig(1) r:=2*u; drawbareaxes(r,-1,1,"x",r,-1,1,"y"); draw fullcircle scaled (2*r); z0=r * dir (180/12); z1 = z0 rotated 120; z2 = z1 rotated 120; for i=0 upto 2: draw o--z[i]; draw o--(z[i] yscaled -1) withcolor mycolour; endfor label.rt(btex $\theta_0$ etex,z0); label.ulft(btex $\theta_1$ etex,z1); label.bot(btex $\theta_2$ etex,z2); label.rt(btex $\hat\theta_0$ etex,z0 yscaled -1); label.llft(btex $\hat\theta_2$ etex,z1 yscaled -1); label.top(btex $\hat\theta_1$ etex,z2 yscaled -1); %draw z0--(z0 yscaled -1) dashed evenly; %draw z1--(z1 yscaled -1) dashed evenly; %draw z2--(z2 yscaled -1) dashed evenly; endfig; end