Fig. 302—Rectangular S-form with crooks
[Figures 301] and [302] are even simpler than the design shown in [figure 300], with appended square key patterns, all preserving rectangular forms and destitute of all others. They are of S-form, and differ more especially in the character of their appendages.
Fig. 303—Rectangular S-form with triangles
Fig. 304—Rectangular S-form with terraced triangles
While the same rectangular idea predominates in [figure 303], it is worked out with the introduction of triangles and quadrilateral designs. This fairly compound pattern, however, is still classified among rectangular forms. A combination of rectangular and triangular geometric designs, in which, however, the former predominate, is shown in [figure 304], which can readily be reduced to certain of those forms already mentioned. The triangles appear to be subordinated to the rectangles, and even they are fringed on their longer sides with terraced forms. It may be said that there are but two elements involved, the rectangle and the triangle.