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Journal for Geometry and Graphics 16 (2012), No. 2, 123--128
Copyright Heldermann Verlag 2012

Gauss-Newton Lines and Eleven Point Conics

Roger C. Alperin
Dept. of Mathematics, San Jose State University, San Jose, CA 95192, U.S.A.

We give a projective version of the Gauss-Newton line for a quadrilateral and its dual form for a quadrangle. These new lines are related to an eleven point conic.

Keywords: Triangle geometry, Gauss-Newton line, eleven point conic.

MSC: 51M04; 51N15

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