@options;
  repereortho(26.05,489.95,30,1,1){ 0 , moyen , grisfonce , num1 };

@figure;
  C = point( 5 , 0 )  { fixe , sansnom };
  D = point( 5 , 35 )  { fixe , sansnom };
  E = point( 2 , 0 )  { fixe , sansnom };
  F = point( 2 , 35 )  { fixe , sansnom };
  dEC = droite( E , C )  { sansnom };
  O = point( 0 , 0 )  { fixe , sansnom };
  perpOdEC = perpendiculaire( O , dEC )  { sansnom };
  M = pointsur( perpOdEC , 6.47 )  { croix3 , car+1 };
  paraMdEC = parallele( M , dEC )  { sansnom };
  dFE = droite( F , E )  { sansnom };
  dCD = droite( C , D )  { sansnom };
  M1 = intersection( dFE , paraMdEC );
  M2 = intersection( paraMdEC , dCD );
  P = pointsur( dFE , 0.65 );
  Q = pointsur( dCD , 0.13 );
  sEP = segment( E , P )  { 3 };
  sCQ = segment( C , Q )  { 3 };
  sPM1 = segment( P , M1 )  { rougefonce , 3 };
  sQ2D = segment( M2 , Q )  { rougefonce , 3 };

@analyse;
M1P = 5.79
M2Q = 1.77