@julietang
Did you figure this out?
Pick first point.
Pick line for virtual intersection.
Right click select Intersection.
Select second line for virtual intersection.


Or pick line as first pick and then right click if double virtual intersection...

BTW - your Sketch4 in the part file is not fully defined.
This should have been covered in first 5 minutes of training...

Would you like to learn how to do this correctly step-by-step?
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