Geometrical drawing, projection drawing, freehand and ornamental drawing, wash work and brush drawing, elementary perspective drawing, architectural drawing (1921)
International Correspondence Schools · Scranton, PA : International Textbook Co. · leaf 291
Fig. 9 10. In Fig. 9 is shown a plan of a small house, thecorner of which a is in contact with the line /■/-, P/^ repre-senting the plan of the picture plane on which this plan inperspective is about to be represented. The angle betweenthe house line and the line PP is 45°, Then, one side of thebay… … 12 §5 ELEMENTARY PERSPECTIVE DRAWING 13 Now, in Fig, 10 are shown the horizon and three principalvanishing points; fe, which is perpendicular to the pictureplane in Fig. 9, must therefore vanish at C in Fig. 10, asall lines perpendicular to the picture plane vanish at C\and^^, which is parallel…
