\pstGeonode[PosAngle={-135,80,0}] (-1,0){B}(3,-1){C}(-.9,.5){O}(0,2){A} \pstGeonode(-2,3){I} \pstCircleOA[linecolor=red]{O}{A} \pstInterLC[PosAngle=-80]{C}{B}{O}{A}{D}{E} \pstInterLC[PosAngleB=60,Radius=\pstDistAB{O}{D}] {I}{C}{O}{}{F}{G} \pstInterLC[PosAngleB=180,DistCoef=1.3, Diameter=\pstDistAB{O}{D}] {I}{B}{O}{}{H}{J} \pstCircleOA[linecolor=red,DistCoef=1.3, Diameter=\pstDistAB{O}{D}]{O}{} \psset{nodesep=-1} \pstLineAB[linecolor=green]{E}{C} \pstLineAB[linecolor=cyan]{I}{C} \pstLineAB[linecolor=magenta]{J}{I}