With patterns that have 1/2 sq triangles or 1/4 sq triangles--the fabric requirements and cutting instructions should include the method that is planned to be used--and maybe even give the measurements for a couple different methods (i.e. one where you are cutting the actual triangle out immediately and another where you are using the methods where you make a larger sq and cut down the middle) I find this really annoying as I have a preferred method and am not "mathy" enough to figure out the fabric requirements otherwise!