7Make a variety of geometric patterns with this GO! Half Square 2" Finished Triangle. Two of the triangles cut with this die sew together to form a 2" finished half square triangle and match up with one 2 1/2" cut square. Easily make 8" blocks with 16 sewn half square triangles. This triangle die can also be used in combination with additional AccuQuilt GO! block dies that work together to create typical patchwork quilt blocks like the Pinwheel and Airplane blocks.