sharonb I honestly have no idea what the name of the square pattern is. My roomie's mother told me how to do it, so I did. I just added outward to make it bigger. To do the inner square, just sew strips to get a square, whatever size you want... place two squares face to face, one horizontal, one vertical, stitch around the edges, and then cut diagonally and you get the angled stripes you see in the photo.