Half squares, triangles, squares, who knew geometry would be this much fun! The GO! Half Square-8" Finished Triangle die cleanly cuts through multiple fabric layers. Two half square triangles sewn together form a perfect 8" finished square. Design your own quilt or use with GO! Half Square-8 1/2" (55058) and GO! Quarter Square-8" Finished Triangle (55399) for quick and easy large-scale pieced quilts.