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 25
nt. Join W and X to z, obtaining the projections of the lines cutfrom the planes LMN and LPN by the auxiliary plane. Revolve the auxiliary plane WXZ about its horizontal trace,until it coincides with the horizontal plane of projection. Thepoint Z falls at Z^ YZi being equal to ZFi. The angle WZ^X… … Let LM be the horizontal trace of the plane and a the anglewhich the plane makes with the horizontal plane of projection. At any point A in line LM draw AB perpendicular to LMand in the horizontal plane. It intersects the ground line at thepoint B. 24 Draw BCi perpendicular to AB and in horizontal…
Geometry, Descriptive
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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