Combine Lines
Use the Combine Lines tool to create a new continuous line segment between two existing lines, resulting in a single seamless line.

Restriction: FE geometry lines are not supported.
        - 
                From the Geometry ribbon, click the arrow next to the
                        Create tool set, then select Combine
                        Lines.
                
Figure 2. 
 - Select Combine from the guide bar drop-down.
 - Select lines to combine.
 - Optional: 
                Check the Smooth Connect checkbox to create curved
                    connections between non-collinear lines, as shown in the following image.
                
Figure 3. 
If left unselected, a straight line connection with angles is created.Figure 4. 
 - 
                On the guide bar, complete one of the following:
                
- Click 
 to apply and stay in the tool. - Click 
 to apply and close the tool. - Click 
 to exit the tool without applying. 
 - Click