TeXgraph# {version 1.99} Cmd Window(-1.9+1.75*i, 1.9-1.6*i, 1+i); Margin(0, 0, 0, 0); Border(0); [OriginalCoord(1), IdMatrix()]; [theta:=0.5236, phi:=1.0472, IdMatrix3D(), ModelView(ortho)]; [GrayScale(0), ComptGraph:=0]; Var O = 0; r = 1.5; N = r*exp(i*pi*110/180); Cmd [tMin:=-5,tMax:=5,DotScale:=1+i]; Graph user_1 = [//command Width:=6, Cercle(O,r), Seg(r,-r),Seg(O,N),Seg(r,N), Width:=3,Arrows:=1, draw("arc",[N,O,-r,0.5,1],[Width:=x/2.5,doubleline:=1]), draw("arc",[N,r,O,0.6,1]), draw("arc",[O,N,r,0.6,1]), LabelDot(O,"$O$","S",0,0.1), LabelDot(r,"$A$","E",0,0.1), LabelDot(-r,"$B$","O",0,0.1), LabelDot(N,"$N$","N",0,0.1), ];