A new manual of perspective: containing remarks on the theory of the art, and its practical application in the procudtion of drawings ... Illustrated by numerous engravings (1849)
Whittock, Nathaniel · London, A. Hall & Co. · leaf 80
er application of the rulefor drawing a circle in perspective, as given ina former operation. Operation 14.—Pointed arches. Pointed arches are drawn from two or morecentres, according to their shape. The archesin this example are triangular arches, and aredrawn from the lower angles of the square,… … across them; a short perpendicular line isdrawn through the intersections in the centre.This must be repeated on the squares in per-spective; and again the arches must be formedby hand; that is, without the assistance ofcompasses, by drawing the small part of thecurved line carefully through the…
Perspective
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
