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 420
of Problem IL, a e is a hori-zontal line. APPENDIX. 91 Draw T V parallel to a e, cutting the sight-line in v.. •. V is the vanishing-point of a e. Complete the constructions of Problem II. and its secondCorollary. Then by Problem 11. a h is the line a b drawn in perspec-tive ; and by its Corollary… … Fig. 76. From Y erect peipendicular v p, and produce a 6 to cut itin p. Join T p, and from e draw e f parallel to a e, and cuttingA T inf. Now in triangles e b t and a e t, as e 6 is parallel to e b andef to A E ;—e b : ef:: e b : a e. But T v is also pai*allel to a e and p v to e b. Therefore also…
Art
Internet Archive · Public Domain Mark 1.0. Free to use for anything.