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 271
=aCXB. On DCchoose a pivot E in such a manner that DE:DO=DO:DC, sothat the triangles OCD and EOD are similar. Then with OD ^ See Geometrische Transjormationen by Dr. K. Doehxemann, pp. 199-204,Leipzig, 1902. ^ The Industrialist, Vol. XXV, pp. 237-240, Manhattan, Kansas, 1899.^ Comptes Rendus, Vol.… … Fig. 113. counter-parallelograms QBCD and ODEF are similar, and asA BOD = A DCS, it also follows that a DOF = A FED. By meansof this reversor it is possible to keep two links BO and FO atequal angles from a given link DO. By a similar constructiontwo other links, BO and FO, symmetrical to DO may be…
Geometry, Projective · Geometry, Analytic
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