Toolbar : 
Geometry toolbar 


Menu : 
Add menu > Geometry submenu> > Add Line 

What to do : 
The Line is now in the graphicarea. 

FreePoints or MergedPoints Add the startPoint and endPoint of the Line as:


Coordinate System of a Line The startPoint is the Origin. The positive X–axis is to its endPoint. 
Example 
How: 
SelectionWindow 



