I need some help guys with this one. Say you have two mirrors like in the image below, with some angle phi between them. The question is how many images would be formed if the angle between them changed to 20, 30, 40, 60, 90, or 0 degress. Is there some sort of equation that will give you this? thanks a lot. nertil1http://img139.imageshack.us/my.php?image=untitledwy0.jpg"