Save 2-D Part as DXF File
Drawing > Save/Print > Save as 
> 
2-D part DXF/DWG
With this function, 2-D parts can be saved in AutoCAD format such as DXF and DWG.
In addition to the AutoCAD (*.dxf) oder AutoCAD (*.dwg) format, you are also allowed to select a file for the settings of the 2-D DXF export as shown below:
Confirm with OK.
