Using Illustrator's Reflect tool

Описание

Here is a short demo of how to cut an object in half and then reflect a new half to put it back together again. The technique is very useful to making a symmetrical object even though cutting a circle in half to make it whole again (the example I used) is quite useless! It works beautifully if you have half of something that you need to reflect and you trim one edge to make a totally straight join.