Then cut the Color 1 2-7/8"
square in half on the diagonal to make two half square triangles.
You will only need one for this block. Mark and cut the Color
3 2-7/8" x 8-5/8" strip into three 2-7/8"
squares. Stack and cut these squares on the diagonal to make six
half square triangles. You will only need five for this block...