Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 52
OF GEOMETRY. BOOK 11. 51 … the rectangle AB.BC is equal to the rectangle AC.BC, together with Upon BC describe (46. 1.) thesquare CDEB, and produce ED toF. and through A draw (31. 1.) AFparallel to CD or BE; then AE=AD+CE. But AE = AB.BE = AB.BC,because BE=BC. So also AD=AC.CD = AC.CB: and CE ==BC; therefore AB.Bp =…
Euclid's Elements · Geometry · Trigonometry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Works. Popular edition.] 2 series (1886)](https://img.insideoutlibrary.com/img/200/bl-bl_003191336_9-297-1.webp)
