#include <CGAL/Simple_cartesian.h>
#include <CGAL/HalfedgeDS_vector.h>
#include <CGAL/Polyhedron_3.h>
#include <iostream>
int main() {
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, 1.0);
Point_3 s( 0.0, 0.0, 0.0);
Polyhedron P;
P.make_tetrahedron( p, q, r, s);
std::copy( P.points_begin(), P.points_end(),
std::ostream_iterator<Point_3>( std::cout, "\n"));
return 0;
}