I have read the section on snapping nodes and looked at this question
I am trying to make something that looks like a Venn diagram, but where I can duplicate the different intersections of (e.g. 3 or more circles). If these circles were somehow created using the Bezier pen, then I think I would know how to grab these partial segments and duplicate them, but as far as I can tell there doesn't seem to be an easy way to:
- add nodes to a shape created with something other than the bezier pen tool.
- trace over existing curve shapes with the bezier tool exactly.
http://www.gghh.name/dibtp/images/compact_and_exploded.png This is the type of image I am trying to recreate.