Sorry. @matt2091 , but from the image it is not clear where the sketch is.
Good morning.@matt2091 then did the assistance tell you something interesting?
Unfortunately I can't understand what it was for you, but knowing someone else's strategies always helps to grow. Thank you!Good morning.
The problem solved it in two ways.
the first applying the division line command, then once the sketch was done on the plane, the division line command was activated, going to select the curved face where to apply the sketch.
The second method was what I needed.
the program gave me the error "unsuccessful winding: the center of the sketch must be projected on the selection" because, from what I understood, there was no anchoring point.
so first filled my solid and then applied the wind command by making the face selection.