Hambidge, Jay, 1867-1924 · New Haven : Yale University Press · leaf 47
DYNAMIC SYMMETRY 31 … Fig. 1. Fig. 3. In Fig. 4, the point B in reference to the center A, is eighteen degrees and the natural sine of eighteen degrees or the line AC, is .309. This fraction multiplied by 1 equals .618. The rectangle AB, therefore, is composed of two whirling square rectangles, placed end to end, a…
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Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
