@options;
  repereortho(310,270,30,1,1){ 0 , moyen , grisfonce , num1 };

@figure;
  S = point( 0 , 0 )  { (-0.6,-0.57) };
  I = point( 1 , 0 )  { i };
  dSI = droite( S , I )  { i };
  F = pointsur( dSI , 2.6 )  { (-0.23,-0.87) };
  K = symetrique( F , S )  { (-0.6,-0.73) };
  perpKdSI = perpendiculaire( K , dSI )  { sansnom };
  H = pointsur( perpKdSI , -3.48 );
  perpPperpKdSI = perpendiculaire( H , perpKdSI )  { sansnom };
  medFP = mediatrice( F , H )  { sansnom };
  M = intersection( medFP , perpPperpKdSI )  { trace };
  lieuMH = lieu( M , H , 200 )  { rouge };

@analyse;