Any way to effectively outline the surface(s) that intersect a sketch

[Siress]

plane?

For instance, if you open a sketch on a flat surface with complex edges, is there a tool that will draw the outline of that surface automatically?

The problem is that I've created a full-round surface fillet and have intersected it with a plane at a different angle. I need a sketch to match that curve exactly, but I'd rather not do the math myself.

Thanks!

 

[Siress]

Found it myself.

Offset Entities with 0 offset.

 

[CorBlimeyLimey]

There is also Convert Entities and Intersection Curve.