Tracing projected geometry in a sketch

[Anonymous]

If you project a line (from another sketch) or edge of a part, a dark red line is projected in the sketch.

But using the sketch a couple months later you don't know anymore where those projected lines were projected from.

So is there a way to trace where they are projected from?

[lplu]

Press hot key "F8", the sketch constraints will show. Hover your mouse on the projection constraint icon, the original edge and the projected sketch line will both highlighted. 

[Anonymous]

Thanks.

And in case of projected geometry from a source sketch in a destination sketch? (= projected lines / circles / arcs / etc.)

Especially when the source sketch and destination sketch are on the same plane.

And the source sketch is set invisible.