Jopling, Joseph, Gladwin, George, fl. 1821-1838 · London : M. Taylor · leaf 29
ore difficult to perceive the corner in tbs centre of the hex¬ agon in these three last figures, as an internal angle than an external angle. If for a moment the appearance of an internal angle can be recognised in figs. 13 and 15, a glance on that face of the cube which is represented as cut will…
Axonometric projection · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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