How Do I Extrude a 2D Sketch Entity?

Use the Push/Pull tool (press P) to extrude a face, sketch, line or 2D edge into a solid or surface. Just select the tool, then click-and-drag the entity you want to extrude.

If you want to push/pull a 2D entity with multiple segments such as a polyline, hold Ctrl as you click-and-drag one of the segments, and the other segments will be extruded as well.

Note: By default, sketches are hidden after push/pulling or revolving a sketch. You can turn this behavior off in the Preferences under Inspire > Modeling Space.