Simplified mechanical perspective for the use of ... schools (1909)
Frederick, Frank Forrest, 1866-1942 · Peoria, Ill., The Manual arts press · leaf 48
+ + 42 THE PERSPECTIVE OF CIRCLES. From a plinth vanishing to the right at 45°, base 50 x lOO, alti-tude 2 0, a semi-circular arch, with radius of 4 0, is cut as shown bythe elevation. From the drawing it will be seen that the diagonals ofthe enclosing square may be put into perspective and used as… … Problem XXVII. Scale yA=V0. S. P. 220 to right and 1 0 above. C. V.20 0 from S. P., P. L. 2 0 above S. P., H. 10 0 above P. L. Any area may be put into perspective by enclosing it within a rec-tangle and locating points in its perimeter by means of known lines. Inthis problem a pointed-arch…
Perspective
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