How to obtain 'complex' intersection?

[Lesept (Fabrice Auzanneau)]

Hi
I have 2 concentric circles and 2 lines and I’d like to get the intersection of those, i.e. the rounded rectangle in the upper left part.
How can I do this easily? If possible I’d like to keep the circles as I need to do this several times for several couples of lines

Here is the picture:

Thanks for your help…

[berainlb (PY)]

1. Close the wedge shape by either redrawing it as a closed shape or by adding a line and joining the ends
2. Group the 2 concentric circles
3. Duplicate the circles so that you can retain it
4. Select one of the grouped circles as well as the wedge, then Tools->Boolean Intersection

Boolean operations require working with closed path shapes and can only work on two shapes at a time. Thus steps 1 and 2 above respectively.

[Lesept (Fabrice Auzanneau)]

Thanks, I’ll try ASAP