- Click Home tab
Draw panel Line. At the Command prompt, enter Line 
- Specify the start point.
You can use the pointing device or enter coordinate values at the Command prompt.
- Complete the first line segment by specifying the endpoint.
To undo the previous line segment during the LINE command, enter u or click Undo on the toolbar.
- Specify the endpoints of any additional line segments.
- Press Enter to end or c to close a series of line segments.