1
Select the Line tool 
from the Sketch ribbon
group or press L.
2 (Optional) Dimension the first point relative to another sketch object.
3 Click or press Enter to set the first point of the line.
4 (Optional) Dimension the line.
5 Click or press Enter to set the next points of the line.
By default, the line is dimensioned to its start point. You can also dimension relative to another sketch object.
If you want any section of the line to be an arc, right-click and select Switch to Arc, then click to set the radius. Right-click and select Switch to Line to return to drawing straight lines between points. You must create at least one line segment before using this option.
6 End the line.
You can:
Double-click to set the end point of the line.
Right-click and select Finish Line.
Press Esc.
Connect the end point to the start point.
Click any tool (except the Clipboard and Orient tools).
You can also:
