1.
a)Open AutoCAD application from desktop shortcut icon or start menu.
b)Click on “open icon” and select “EX16-8” file then click on “Open” button.
2.Type “REFEDIT” and press ENTER KEY.
3.Click on “OK” button.
4.Then select a circle and remove the circle then create a polygon by using “POL” command.
5.Click on “Save Changes” tool from Edit Reference panel.
6.Save the drawing by using quick save button.