单词 | Isotomic Conjugate Point | ||||||||
释义 | Isotomic Conjugate PointThe point of concurrence
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There are four points which are isotomically self-conjugate: the Centroid Vandeghen (1965) calls the transformation taking points to their isotomic conjugate points the Cevian Transform. Theproduct of isotomic and Isogonal is a Collineation which transforms the sides of aTriangle to themselves (Vandeghen 1965). See also Cevian Transform, Gergonne Point, Isogonal Conjugate, Jerabek's Hyperbola, Nagel Point,Steiner's Ellipse
Casey, J. A Treatise on the Analytical Geometry of the Point, Line, Circle, and Conic Sections, Containing an Account of Its Most Recent Extensions with Numerous Examples, 2nd rev. enl. ed. Dublin: Hodges, Figgis, & Co., 1893. Eddy, R. H. and Fritsch, R. ``The Conics of Ludwig Kiepert: A Comprehensive Lesson in the Geometry of the Triangle.'' Math. Mag. 67, 188-205, 1994. Johnson, R. A. Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Boston, MA: Houghton Mifflin, pp. 157-159, 1929. Vandeghen, A. ``Some Remarks on the Isogonal and Cevian Transforms. Alignments of Remarkable Points of a Triangle.'' Amer. Math. Monthly 72, 1091-1094, 1965. |
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