 <img src="../../../../../../fig/mpt/modules/geometry/sets/@ConvexSet/addfunction6.png" alt="../../../../../../fig/mpt/modules/geometry/sets/@ConvexSet/addfunction6.png"> and <img src="../../../../../../fig/mpt/modules/geometry/sets/@ConvexSet/addfunction7.png" alt="../../../../../../fig/mpt/modules/geometry/sets/@ConvexSet/addfunction7.png"> to a circle <img src="../../../../../../fig/mpt/modules/geometry/sets/@ConvexSet/addfunction8.png" alt="../../../../../../fig/mpt/modules/geometry/sets/@ConvexSet/addf