Hambidge, Jay, 1867-1924 · New Haven : Yale University Press · leaf 38
DYNAMIC SYMMETRY 22 placed in the center of the shape 1.38a, the "defect" area on either side is com- posed of a square and a whirling square rectangle. … The reciprocal of 1.382 is .7236; .4472 multiplied by 2 equals .8944, and this result added to .7236 equals 1.618. (See Fig. 8.) The area of Fig. 8 is com- posed of two root-five rectangles, .4472 x 2, plus a .7236 shape. Fig. 8. All of these shapes are found in abundance in both Egyptian and Greek…
Design
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Albertvs Dvrervs Nvrembergensis pictor hvivs aetatis celeberrimus, versus è Germanica lingua in Latinam : pictoribus, fabris aerariis ac lignariis, lapicidis, statuariis, & vniuersis demum qui circino, gnomone, libella, aut alioqui certa mensura opera sua examinant, propè necessarius, adeò exactè : quatuor his suaru[m] Institutionum geometricarum libris, lineas, superficies & solida corpora tractauit, adhibitis designationibus ad eam rem accommodatissimis : denuo ad scripti exemplaris fidem omnia diligenter recognita, emendatius iam in lucem exeunt (1535)](https://img.insideoutlibrary.com/img/200/ia-albertvsdvrervsn00dure-64-1.webp)
