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I am always getting a degenerate plane, any guesses why ???

for(Halfedge_iterator hedge_it = model.halfedges_begin() ; hedge_it !=
model.halfedges_end(); hedge_it++)
    {
      // proceed for boundary edges
        if( hedge_it->is_border() == false) // boundary(hedge_it)
            continue;

        // find x_proj by:
        // "projecting_distance" perpendicular to "hedge_it" from the midpoint
of hedge_it
        // in the plane of the model at hedge_it
         // Finding the midpoint: midPt
        Point_3& point1 = hedge_it->vertex()->point();
        Point_3& point2 = hedge_it->opposite()->vertex()->point();
        Point_3& midPt = midpoint(point1, point2);
        
        Plane& plane = hedge_it->opposite()->face()->plane(); //opposite
half-edge since this gives the plane of the model at that edge
        Vector3& direction = plane.orthogonal_vector();
        
        //debugging purposes
        Point_3 pt = plane.point();
        bool waste = false; 
        waste = plane.is_degenerate();

        //Vertex_3 x_proj = hedge_it.project(midpoint, projecting_distance);
        Point_3& x_proj = midPt + (direction * projecting_distance);
}

waste (degenerate plane) always becomes true, why ? I tried different values 
of
vertices, but still..

Polyhedron model;
    Point_3 p( 1.0, 0.0, 0.0);
    Point_3 q( 0.0, 1.0, 0.0);
    Point_3 r( 0.0, 0.0, 0.0);
    model.make_triangle(p, q, r);

Can someone please help me with this? 

Thanks