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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 116

An illustration from 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, leaf 116
theorder seen in the third group, where the final quotients areeach, 1. In this curious result, we see again, exhibited in numbers, theprincijple of unlfoiinity. But the order in which the first two groups of quotients areused as the next dividends, is found as indicated by the paren- * The number… … NUMEKICAL EXPRESSION OF THE ELEMENTARY IDEAS. 83 theses and the adjoining circle, by combining 1, 2, 3 in everypossible order taken in rotation, in the direction of the .arrow.Here again we have likewise the _pri?iciple of variety. 23. Ratio the principle of comhination.—Numbers can becompared in…

Geometrical drawing · Mechanical drawing

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