1-1-3M-3M October 8, 2012Tessellation Nation3-shape tessellationRaymond K. Houston Tile 1-1-3-3M Starting from Home position, reflect the lower two cells horizontally, then rotate them 180 degrees. Below is the resulting pattern of repeated tiles. Pattern 1-1-3M-3M Share this:EmailPrintFacebookMorePinterestTwitter Related posts: 1-1-2M-2M 1-1-4-4 1-1-1M-1M Quilt 2-2M-4M-4 and 3M-3-1M-1 (alternating tiles) Several observations . . .