Geodaesia : or, The art of surveying and measuring land made easy (1768)
Love, John, fl. 1688, Clark, Samuel · London : Printed for J. Rivington · leaf 182
. Draw the line o O, which with o A and o F,divides the figure into three equal parts.- To divide a circle according to any proportion^ by aline concentric with the firft. Th<; areas of circles are in proportion to one ano-ther a s the fquares of their femi-diameters; there-fore, if you divide… … The diameter thereof is 2 chains. The femidiameter i chain, or 100 links. Thefquare thereof 10000. Half the fquare 5000* The root of the half 71 links; which take fromyour fcale, and upon the fame center defcribe thecircle G E H F, which will divide the circle A B C Dinto two equal parts. CHAP.…
Surveying
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-34-5.webp)
