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[sara_mahdavi <>]

hi all,
please tell me if my question is ambiguous ,
I can extract  all vertexes of facet of  polyhedron  but I don't know to
obtain plan for any facet of polygon ,after normal vector for any facet of
polyhedron,I read Chapter 23, 3D Polyhedral Surfaces , I see Example
Computing Plane Equations but in  this example all plan obtained ,but I need
a plan Corresponding one facet of polyhedron and work by this plan,  
,please help me, thanks
my code for obtain vertexes of one facet of polyhedron is :
Facet_iterator fI;
for (fI=P.facets_begin(); fI != P.facets_end(); fI++)      //p is polyhedron
{
 int faceDeg = fI->facet_degree();
//  fI->plan();                                       // error
          CGAL_Halfedge_circulator edgecirculator = fI->facet_begin();
      for(int i = 0; i < faceDeg ;i++)

      {  std::cout<<edgecirculator->vertex()->point();          
            edgecirculator++;

      }
} 
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