Hay, D. R. (David Ramsay), 1798-1866 · Edinburgh and London : W. Blackwood and sons · leaf 100
the proportions of the figure they produce arealtered, and its size increased in the ratio of the increasedlength of radii; the difference hetween its two diametersdecreasing in a like ratio. The figure, however, is still aperfect ellipse. But with respect to the composite ellipse, the four pairof… … xxn
Aesthetics · Proportion (Art)
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