Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 13
lving graphically many geometrical problems involvingthree dimensions. (Figs. 1, 2, and 3.) NOTATION The following notation is used: H Horizontal Coordinate Plane, V Vertical Coordinate Plane, P Profile Coordinate Plane, Q, P, P, Sj etc., any other planes. HQ, HP, etc.. Horizontal Traces of any… … - Vertical Coordinate L Horizontal Coordinate Fig. 4 ,a 6 icA
Shades and shadows · Geometry, Descriptive
Internet Archive · Boston Public 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-14-10.webp)
