Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates (1887)
McGuirl, Thomas H. [from old catalog] · Toronto, W. Briggs; · leaf 18
Parallel lines drawn between vanishing lines are of equallength, and, conversely, the lines joining the extremities ofequal parallel lines will vanish to a point. … Fig. 4. Again, if the spectator stood on the ground at O, where the *picture plane rests, and looked towards C on tlie horizon, it 14 DKAWING. is clear that he could see objects lying on the ground any-where between AB and HL. Hence, if we take AB as theground line, or base of picture plane, and OC…
Geometrical drawing · Perspective
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
