How make into Faces?

Trying to find a way to make each area of this its own face. At the moment is a bunch of Curves.

Screenshot 2024-06-17 234338

I thought maybe Extrude and use like a cookie cutter but having lots of trouble.

Have you tried converting the object to mesh and using F to fill? It might depend on how the curves are made though.

This should work but one of the objects needs to be 3d for the boolean to work well, ie use the cutter on an object that has thickness (not a 2d plane).

It’s done with GN otherwise I could do that.

This is how I created it …