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)
Fig.c … .-,■// A:-^ iz: PLATE XLVII. 141 Note.—^The tangent drawn at L and the curve of the shadowtouch the edge of the frame in the same spot, but if the propor-tions were different they would not do soj therefore it is alwaysbetter to draw the tangent. Figure 4 Is a Circular Stud representing an enlarged…
