Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 723
delineated., is called the plane of perspective or the plane of the picture. Theintersection G L of the first and second planes is called the line of projection,the ground., or base line of the picture. 3. The plane E F passing horizontally through the eye of the spectator, andcutting the plane of… … Fig. 1785 PERSPECTIVE DRAWING. TOY 4. The piano S T passing vertically through the eye of the spectator, andcutting each of the other planes at a right angle, is calleel the central plane. Point of vie?v, or point of sight, is the point where the eye is supposed tobe placed to view the object, as…
Mechanical drawing
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