Elements of plane and solid free-hand geometrical drawing, with lettering; and some elements of geometrical ornamental design, including the principals of harmonic angular ratios, etc. In three parts ... for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing (1878)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 129
t 11 ft. 8 ins., while rather low, yet helpsto realize certain ideas of snug home shelter and winter com-fort, which are as agreeable in their way, in a cold climate, asthe stateliness of a lofty room. 46. To afford a complete view of harmony of form in com-bined rectangles, it is not enough to… … diagonal, AH, making an angle of 30° with its edge AB, andABGF the side wall folded down into the level of the floor, andwith a diagonal making an angle of 22°: 30 with its base AB.Also, let ADEC be the end wall, similarly folded, and whosediagonal AF will make an angle of not far from 36° with…
Geometrical drawing · Mechanical drawing
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