A text book of geometrical drawing : abridged from the octavo edition : for the use of schools in which the definitions and rules of geometry are familiarly explained, the practical problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible : with an introduction to isometrical drawing : and an essay on linear perspective and shadows ... (1849)
points of inter-section erect perpendiculars to intersect the rays drawnfrom Jlf and /. 8th. From M and /successively, with a radius M.Jy describe the front arch, and from iJ the crown, drawa ray to S; from A and B with the radius •/?. By de-scribe the second arch, and from K and Z, describe… … ]/[rMim£p. HJjvMn k Sons PLATE XLI. 121 PLATE XLI. TO DESCRIBE ARCHES ON A VANISHING PLANE. Figure 1 The Front Arch A. N. B, the Base Line G. L, Hori-zon D, S, Point of Sight S, and Point of Distance D,being given, 1st. Draw H, /across the springing line of the arch,and construct the parallelogram…
