Hi there everyone, I'm troubled with a certain problem. I'm trying to locate the circles of view in perspective using math rather than using a right angle tool to manually locate the circles of view. I've summarized my problem in the picture below: http://mywebpages.comcast.net/mattwashburn/perspective.jpg [Broken] So, if line #1 is equal to say, 1. What would line #2 be? 1.__% larger? Thanks everyone.