Mirroring entities    

You can create a mirror image of an entity. You mirror the entity about a mirror line, which you define by specifying two points in a drawing. You can delete or retain the original entities.    

To mirror entities

   1   Do one of the following to choose Mirror ():     

    On the ribbon, choose Edit > Offset (in Modify).

    On the menu, choose Modify > Mirror.

    On the Modify toolbar, click the Mirror tool.

    Type mirror and then press Enter.

   2   Select the entity, and then press Enter.

   3   Specify the first point of the mirror line.

   4   Specify the second point of the mirror line.

   5   In the prompt box, choose one of the following:

    Yes, Delete Entities deletes the original entities.

    No, Keep Entities retains the original entities.