rays returns the rays of the input as the columns of the matrix R.
i1 : P = convexHull(matrix {{1,-1,2,-2},{1,1,2,2}}, matrix {{0},{1}})
o1 = {ambient dimension => 2 }
dimension of lineality space => 0
dimension of polyhedron => 2
number of facets => 5
number of rays => 1
number of vertices => 4
o1 : Polyhedron
i3 : C = posHull P
o3 = {ambient dimension => 2 }
dimension of lineality space => 0
dimension of the cone => 2
number of facets => 2
number of rays => 2
o3 : Cone