A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 269
2d IVIethgd.—Let ACED be the square on thehypotenuse. Let fall the perpendiculars EF, DC,etc. Show that the three triangles are equal, andthat FD and LB are the squares of the two sides ABand BC. 3d Method.—Let BL and BH be thesquares on the sides. Produce FL andHG till they meet in K. Draw DA and…
Geometry · Trigonometry
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Brief synopsis of the course of lectures in descriptive geometry; as arranged for the first year Faculty of Applied Science and Engineering, University of Toronto. [By] J. Roy Cockburn (1922)](https://img.insideoutlibrary.com/img/200/ia-fybriefsynopsiso00cockuoft-7-2.webp)
