Looks like you got lots of help already....but just for chuckles, this is what I did the very first time I needed setting triangles - I got out the newspaper & laid my block onto it. Then I drew a triangle that was big enough to fit it & added more than enough extra for seam allowances. Then I used that as my pattern & cut out the setting triangles. I folded them in half & marked the center of the long edge, then matched that to the center of my block side, pinned & sewed & then trimmed the excess. Worked out just fine! :lol: