Inspired by Mathematics of girih tilings. This makes a 20 1/2 '' block! Templates are actual size with 1/4" seam allowance. Receive an extra block to join two decagons . So you can do different projects- table runner ,pillow, wall hanging , bed quilt. This PDF file contains 7 pages. Before you print, make sure that the page scaling is None or Actual size. This pattern does not contain basic instructions. BASIC SKILLS NECESSARY Y-seams SIZING / FINISHED MEASUREMENTS 20 1/2 ''