Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 139
Jtj. //f T- 78 APPLIED PERSPECTIVE … vanishing point of lines which are normal to in-clined planes whose horizon is HH (cf. p. 64);any line which is normal to a given plane will berectangularly coordinate with any two lines inthat plane which pass through its foot and areat right angles, that is, have conjugate vanishingpoints. Fig.…
Perspective
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
