How do I measure a board if I am cutting angles the ends? Its easy enough to measure for a 90 deg angle. Just measure out from the blade and cut, but I cannot figure an easy way to measure for a 45 deg angle. In other words, if I want to make a picture frame, what is the procedure for measuring the boards and cutting them. If I am missing some minor thing here, please forgive me for being so thick. By the time I get through trying to get these cuts right my picture is like half the size I started to make.