I am using the LinearAlgebra package. The function SinbularValues returns the singular value matrix S as a vector, i.e.,S*<1,1,1..1>.  Is there an easy way to recover S, itself, from this vector?

I am trying to learn how to use Maple by working simple-minded projective geometry problems. I want to define a line in terms of two points, one of which is an intersection of two other lines. Must I define the intersection before using it as an argument, or is there a way to refer to the intersection without bothering to name it, as one might do in OOP by creating an anonymous object to use as an argument of the intersection procedure?