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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 102

An illustration from Perspective and geometrical drawing : adapted to the use of candidates for second and third-class teachers' certificates, 1887, leaf 102 — when thecube is moved out of its parallel position, this apparently-hidden vanishing point appears, and strikes the horizon at adistance from the centre of vision, depending on its angle, asalready explained. Thus :— In Fig. 59, AB on left side shows the base of a cube inparallel perspective, while… … Fig. 60. horizontal line to left of C.V. We will now proceed toascertain the positions of these points. Example 1.—Draw a square (side 4) lying on ground; sidesmake an angle of 45° with picture plane, and the angletouches the P.P. at a point 4 to the right; scale ^ = ^ • DRAWING.

Geometrical drawing · Perspective

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