Free-hand drawing : a manual for teachers and students (1904)
Cross, Anson Kent, 1862- · Boston : Ginn · leaf 119
ces, one at the right and the other at the left, must be repre-sented by parallel horizontal lines; that is, when only one of thevertical faces of a horizontal prism is visible from any point betweenthe ends of this surface, the horizontal lines of this and parallelsurfaces must be represented by… … Fig. 38. An Unsatisfactory Drawing.
Drawing
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