Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 100
PKOBLKM IV. To divide a f^iven line into two parts, such that thr rryenter partshall be a mr.an proportional between the whole line and theother part. fOD GEOMETRY. … Let AB be the given line. At the extremity B of the lineAB, erect the perpendicular BCequal to the half of AB ; from thepoint C, as a centre, with the ra-dius CB, describe a semicircle ;draw AC cutting the circumfe-rence in D ; and take AF=AD : Athe line AB will be divided at the point F in the…
Trigonometry · Geometry
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Examen dv livre des Recreations mathematiqves, & de ses problemes en geometrie mechanique, optique & catoptrique [du J. Leurechon] Où sont aussi discutées & restabiles plusieurs experiences physiques y proposées (1639)](https://img.insideoutlibrary.com/img/200/ia-examendvlivredes00mydo-87-19.webp)
