An introduction to projective geometry and its applications; an analytic and synthetic treatment (1905)
Emch, Arnold, b. 1871 · New York, J. Wiley & sons; London, Chapman & Hall, limited · leaf 264
BO = DO. Attaching the links PB = PC, P/A = PD, pivoted at P and P respectively, and all equal to AO, two equal rhombs OBPC and OAPD are obtained. Hence /AOP = I BOP, /POB = ZPOA, and /BOP + APOB=ZAOP+ /.COP, or /POP=/AOC = cf>. 1 A paper on this linkage and its applications was presented to the… … 252 PROJECTIVE GEOMETRY. Furthermore, P0=PO. The linkage of Fig. 108 can thereforebe used to perform the proposed rotation. 2. The foregoing linkage may be used for various purposes.In the first place when O is not fixed, we have in the three pivotsP, O, Pf a variable isosceles triangle which in…
Geometry, Projective · Geometry, Analytic
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