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
= C0=50 = DO. Attaching the links PB = PC,PA = PD, pivoted at P and P respectively, and all equal to AO, two equal rhombs OBPC and OAPD are obtained. Hence lAOP = I BOP, ZPOB= ZPOA, and ZBOP + ZPOB= ZAOP+ ICOP, or IP0P= lAOC = cl>. ^ A paper on this Knkage and its applications was presented to… … Fig. 108. 252 PROJECTIVE GEOMETRY. Furthermore, P0=PO. The hnkage of Fig. io8 can thereforebe used to perform the proposed rotation, 2. The foregoing hnkage may be used for various purposes.In the first place when O is not fixed, we have in the three pivotsP, O, P a variable isosceles triangle…
Geometry, Projective · Geometry, Analytic
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