Create 2D Curve from Point Cloud
The Create Curve button on the Curves Page of the CAD Editor displays the 2D Curve from Points dialog which allows you to create a 2D curve from a point cloud.
Access the CAD Editor from the Display Ribbon Tab>CAD>Editor
Export 2D CAD as DXF
From the Curves tab within CAD Editor, select CAD Curve(s) then press the Export DXF button. Specify file path and filename then press Save.