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The elements of perspective : arranged for the use of schools and intended to be read in connexion with the first three books of Euclid (1859)

Ruskin, John, 1819-1900 · London : Smith, Elder · leaf 140

An illustration from The elements of perspective : arranged for the use of schools and intended to be read in connexion with the first three books of Euclid, 1859, leaf 140 — 118 [App. I. PRACTICE AND OBSERVATIONS PROBLEM XIV. Several exercises will be required on this important problem. I. It is required to draw a circular flat-bottomed dish narrower at the bottom than the top ; the vertical depth, being given, and the diameter at the top and bottom. a … Let a b, Fig. G5., be the diameter of the bottom, ac the diameter of the top, and a d its vertical depth.

Perspective

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