[Inkscape-user] How do I create a node at intersection of two lines?

Is it possible to create a node point at the intersection of two lines from different objects?

I tried using the constructive geometry primitives in the Path menu (union, intersection, exclusion, difference, etc.), but these were not quite flexible enough for what I want to do. It seems like the lowest geometry primitive would be to find the intersection of two lines.

Here is an example of what I'm trying to do: http://www.noah.org/intersect/index.html I had to fake this by adding a node and visually moving the node point until it appeared to be at the intersection. It was far from perfectly aligned.

Yours, Noah