Hambidge, Jay, 1867-1924 · New Haven : Yale University Press · leaf 51
DYNAMIC SYMMETRY 35 A line drawn through the intersection of two diagonals of a pentagon divides the area of the major square as in Fig. 16, into three shapes, two of which are rectangles of the whirling squares and one is composed of a square and a root- five rectangle. … Fig. 16. When the area of a major square is subdivided, as in Fig. 17, four very in- teresting shapes result. AB is a rectangle of the whirling squares. BC is rep- resented by the ratio 1.1708, this being composed of .618 plus .5528, the latter ratio being the reciprocal of 1.809 or a square plus…
Design
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