Mirror object

You can flip objects about a specified axis to create a symmetrical mirror image. You flip objects about an axis called a mirror line to create a mirror image. To specify this temporary mirror line, you enter two points. You can choose whether to erase or retain the original objects.

Click Menu "Editor", and then choose "Mirror"

Select objects to Mirror

Specify first point of mirror line

Specify second point of mirror line

Check if you need erase source objects?