Start by printing off the side unit templates (A). Trace each of
these carefully onto another sheet of paper or template plastic, and
add the 1/4" seam allowances to all sides of each.
Cut out these new templates and use the side triangle templates to
cut eight side triangles as shown at left from the Color 2 10" x 20"
Use the center triangle template to cut out four center triangles
as shown at left from the Color 1 9" x 18" rectangle..