Thanks for your detailed explanation.
I solved it by manually creating the new node as near as possible to the triangle node....

The new node should snap exactly where the triangle node is! Is this possible. At the moment I can go anywhere near the triangle node with the "add node" tool and the tool does not snap to my bezier path....

Ok I can delete them now. But the snapping does not work with the create node more exactly. All snapping options on the right side (vertically listed) are enabled...

Perhaps this picture shows my plans better: http://i.minus.com/iZjcbOzuXuJGe.png I want to delete the section between the upper "green"node and the "yellow" node. At the moment this is not possible to me, because it seems that the yellow one is not really connected to the bezier ...

Maybe my english is too bad :) I want to build a logo with two parallel circles which form three partial arrows. The circle sections are the arrow borders. Here is another picture: http://i.minus.com/iZjcbOzuXuJGe.png All you can see is one path. I want to delete the path between the upper node in t...

Hi all, I' am new to inkscape and have problems to get all my path operations working. Several other problems could be solved with google, but now this one seems to be a bit tricky: As you can see in the picture below the inner and outer circle are joined in a single path . This was made with two si...