Parallelograms are a basic building block in quilting. A simple shape that adds a great twist to quilt designs. The GO! Parallelogram-2 15/16" x 3 7/8" die is typically used with GO! Half Square Triangle-2 1/4" Finished Square (55147, 55777). The GO! Parallelogram-2 15/16" x 3 7/8" die is the perfect size to cut your own parallelograms with your favorite fabrics or out of fabric pieces from your stash.