Good day.
Maybe someone can explain why the trim does not work (indicated on the file with arrow)
I do not see it...items seems flat.
The little arc was created with tan tan.

Thank you!

Hi Matadem, it's not possible to trim a closed curve with just one intersection point.

You need at least 2 spots to partition a closed curve into different pieces.

So you need an additional cutting object set up before it's geometrically possible to trim your curve.

- Michael