St. Mark's rest : the history of Venice written for the help of the few travellers who still care for her monuments (1885)
Ruskin, John, 1819-1900 · New York : Lovell · leaf 353
observe, in practice, that, his paper lying flat onthe table, he has only to draw the line T V on its horizontal surface,parallel to the given horizontal line A B. In theory, the paper shouldbe vertical, but the station-lino s T horizontal (see its definition above, 24 THE ELEMENTS OF PERSPECTIVE.… … paper as in Fipf. 8. ; and let it be required to draw the linea h without usinpf the point c. Find the position of the point a in a. (Problem I.) paire 18.) ; in whicli case T v, bfintr drawn parallel to a b, will beliorizontal also, and still cnt tlie sight-line in v, Tlie construction will be…
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