Hambidge, Jay, 1867-1924 · New Haven : Yale University Press · leaf 37
DYNAMIC SYMMETRY 21 the end, defines also a root-five rectangle, C being the square. Obviously this may be done at either end and side, resulting in the determination of four root-five rectangles overlapping each other within the major shape. In a whirl- ing square rectangle (Fig. 5*3), if lines be… … Fig- 3- Fig. 4. defined, composed of the square E and the rectangle F. This shape, composed of E and F, is numerically described as the rectangle 1.382. The square E is unity. The rectangle F is the fraction .382, this being the reciprocal of 2.618, i. e., it is a whirling square rectangle, 1.618…
Design
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Concrete in the country / [American Cement Company]. (1910)](https://img.insideoutlibrary.com/img/200/ia-ConcreteInTheCountryamericanCementCompany-68-70.webp)
![An illustration from Preclarissimũ opus elemento[rum]](https://img.insideoutlibrary.com/img/200/ia-gri_000033125009354198-19-0.webp)