Extract Entities
Use the Extract tool to convert sketches into geometry lines and surfaces with the realize option. Delete lines and surfaces converted from a sketch entity with the unrealize option.

- 
                Realize a sketch.
                
- 
                Unrealize a sketch
                - Select Unrealize from the guide bar drop-down.
- Select a sketch to be unrealized from the browser or the modeling window.
- 
                        Click  on the guide bar. on the guide bar.
 All the associated lines and surfaces are deleted.Figure 6.  
 


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