Hambidge, Jay, 1867-1924, Yale University. Rutherford Trowbridge Memorial Publication Fund · New Haven, Conn., New York City, Yale University Press; [etc., etc.] · leaf 49
SYMMETRY 31 Fig. 2. 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 2 equals .618. The rectangle AB, therefore, is composed of two whirling square rectangles, placed end to… … A root-five rectangle is composed of a whirling square rectangle, plus its reciprocal, or 1.6 18 plus .618. Consequently the area shown by the heavy lines in Fig. 6a is composed of two root-five rectangles, and the area in b, defined by heavy lines, is equal to four root-five rectangles. ^ /^…
Design · Vases, Greek
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