Debbie mg, The outside squares are all bias edges. Somewhere in the discussion or threads I mentioned that you should cut the triangles larger than needed to assure yourself of decent points. I always cut my triangles larger by at least 1/4" to 1/3". Measure the individual squares after sewing them to each other to make sure they are the correct dimensions. If you have 1-1/2" square--after sewing it should measure 1" square and so on. I find the more pieces in a block the more you have to check. Anne