#include <CGAL/Arr_line_arc_traits_2.h>
This class is a traits class for CGAL arrangements, built on top of a model of concept CircularKernel.
CircularKernel
It provides curves of type CGAL::Line_arc_2<CircularKernel>.
CGAL::Line_arc_2<CircularKernel>
ArrangementTraits_2