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)
Cockburn, J. Roy · [Toronto] University of Toronto Engineering Society · leaf 12
hese quadrants are usually called the first, second,third and fourth, being numbered as shown in Fig. IL The point of sight or point of observation is considered tobe in the first quadrant. If the horizontal plane be revolved as indicated by the arrowheads until it coincides with the vertical plane… … !° 1^ib r : 1 Z j3 ♦ >a 1 1 rd ie* d* The points B, C and D in the other quadrants will be repre-sented as shown. 11 Definitions The vertical trace of a straight line is the point where it intersectsthe vertical plane of projection. The horizontal trace of a straight line is the point where…
Geometry, Descriptive
Internet Archive · Gerstein Library, University of Toronto · 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, leaf 12](https://img.insideoutlibrary.com/img/1024/ia-fybriefsynopsiso00cockuoft-12-7.webp)
