I use the Lazy Girls flying geese ruler. It uses squares and there is no waste of fabric. You start with a big square and two smaller. You sew 1/4 inch from the center and then cut down the middle. After they are cut apart you add another small aquare to each and cut again. You end up with 4 geese for each set.
The ruler has marks for cutting-you just pick the finished size. Line it up, cut and sew. NO MATH and not really any measuring since you're lining up a "template".
So worth the money :!: And the points come out perfect every time too.