Project
Project selected geometry onto the sketch plane as construction geometry.
Project to a Sketch Plane
- 
                On the Sketch ribbon, select the Project tool.

 - Select a face or plane as the sketch plane.
 - 
                Select points, edges, or faces to project onto the sketch plane.
                The selected entities are projected onto the sketch plane as dotted construction lines.
 - Right-click and mouse through the check mark to exit, or double-right-click.
 
Tip: To convert a construction line to a sketch curve,
                right-click the construction line and select Create
                Curve.
            Note: When a sketch plane is defined on the face of a part (or an
                impression on the face of a part), the projection curves are generated
                automatically. You can turn off this option in the Preferences under .