Now add a Color 1 trapezoid to the top and bottom, and
then to the left and right sides., matching the center of each long
side of the traps to the centers of the sides of the nine patch
unit. Now add Color 1 half square triangles to the corners,
again, matching the centers of the long side of the triangles to the
centers of the slant sides of the blocks middle unit...
...on to Page 2!