simple box using Line command

Use the following AUTOCAD command:
1.line

Method:
1. Type the word line to the command entry, then type (0,0) to specify the first point of an object



2. Press F8 to activate the ORTHOMODE.



3. Type ( @10<0 ) for the initial value of an object.Followed by ( @10<90 ), ( @10<180 ) for the third value. And the last one is ( @10<270 ).