Mirror group
- On the 
 tab, in the 
Group group, click 
Mirror group . - Select the group in the drawing.
 - Select a line to act as the symmetry axis.
 - Select Confirm.
 
 Select the group, and
      then select the context-sensitive function Mirror.
 tab, in the 
Group group, click 
Mirror group .
 Select the group, and
      then select the context-sensitive function Mirror.