Simplified mechanical perspective for the use of ... schools (1909)
Frederick, Frank Forrest, 1866-1942 · Peoria, Ill., The Manual arts press · leaf 54
48 … THE PERSPECTIVE OF OBLIQUE LINES. equal to distance Y-C. Distance V. P. R. — L. V. P. R. is made equal to distance Y-D. In Fig. 14, line 1-2 is included in two planes. It is in a horizontal plane and also in a vertical plane. Its vanishing point is V. P. L. the point of intersection of the traces…
Perspective
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