How do you make a projected curve?
Projected Curve: This feature will take two sketches on two different planes and project them to where they intersect to produce one 3D sketch
First: have your two sketches on two different planes ready
2nd: go to Projected Curve
3rd: select the two sketches, notice the projection type is "Sketch on sketch", this is a projected curve. After you select the two sketches SW will produce a preview result in yellow. Click the green check to accept and continue
And here is the final result. Note the Curve feature in the tree; the two sketches used are under it (adsorbed) and can be modified is needed. :)