Perspective and geometrical drawing : adapted to the use of candidates for second and third-class teachers' certificates (1887)
McGuirl, Thos. H. (Thomas H.) · Toronto, Ont. : W. Briggs · leaf 81
RAWING. The Pyramid. We now come to consider solids, which are not wholly rec-tangular; they are cones and pyramids and their frusta. In speaking of the height of a pyramid or cone, we meanthe distance from the vertex perpendicularly to -the base.This is important, especially in frusta, where the… … Take A, 4 to right and B, 4 to right of A; complete thesquare ABDC; draw diagonals intersecting in O; join 0 with THE PYRAMID. 79 C.V. and produce it backward to meet base line in E; at Eerect perpendicular, 8 in height to M; join M C.V.) through0, draw OX, parallel to EM; join XA, XB, XC,…
Geometrical drawing · Perspective
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