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 28
he projection of a cube on a plane whichmakes equal angles with all its edges. Such a plane would beat right angles to a diagonal of the cube. Let AB (Fig. jO) be a diagonal of a cube as shown aboveand AC, AD and AE, three edges meeting at the point A. In Fig 3I the ratio of the line BD to the line… … In the three triangles ABC, ABD and ABE The sides AC, AD and AE are all equal, and sides BC BDand BE are all equal and side AB is common. .. angles BAC,BAD and BAE are all equal. If perpendiculars be dropped from the three points C, D and Eon the line AB, they will all fall at a common point F, and…
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 28](https://img.insideoutlibrary.com/img/1024/ia-fybriefsynopsiso00cockuoft-28-25.webp)
