Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 65
roundVV into the picture. The angle VMV,which is the angle VSV, is evidently the slope-angle of the line MV. The point Mmoves in the Horizon Plane on the circular arc SM. It is sometimes important to draw a line toward an inaccessible vanishing point,and to measure distances on it. Fig. 48 shows… … N /
Perspective
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