Free-hand drawing : a manual for teachers and students (1898)
Cross, Anson K. (Anson Kent), 1862-1944 · Boston : Ginn & Company · leaf 80
62 FREE-HAND DRAWING. … Rule 17. When two or more faces of a cube are seen, none ofthem can appear their real shapes. Place the cubical form on the desk, with the tablets vertical, andone of them seen edgewise, Z>, and discover that the other tablet doesnot appear a straight line. This illustrates the following rule :…
Drawing
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-483-254.webp)
