#include <iostream>
#include <CGAL/Simple_cartesian.h>
int main()
{
{
Point_2 p(0, 0.3), q(1, 0.6), r(2, 0.9);
}
{
Point_2 p(0, 1.0/3.0), q(1, 2.0/3.0), r(2, 1);
}
{
Point_2 p(0,0), q(1, 1), r(2, 2);
}
return 0;
}
bool collinear(const CGAL::Point_2< Kernel > &p, const CGAL::Point_2< Kernel > &q, const CGAL::Point_2< Kernel > &r)