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    Nedrenco, Dmitri
      (with J. Konig) Septic equations are solvable by 2-fold origami, 16 (2016) 193--205.
    Nelsen, Roger B.
      (with C. Alsina) A visual proof of the Erdos-Mordell inequality, 7 (2007) 99--102.
      (with C. Alsina) On the diagonals of a cyclic quadrilateral, 7 (2007) 147--149.
    Ngo, Quang Dong
      (with T. T. Vu) A generalization of the Droz-Farny line theorem with orthologic triangles, 16 (2016) 415--418.
    Nguyen, Khoa Lu
      A synthetic proof of Goormaghtigh's generalization of Musselman's theorem, 5 (2005) 17--20.
      On the complement of the Schiffler point, 5 (2005) 149--164.
      (with J. C. Salazar) On the mixtilinear incircles and excircles, 6 (2006) 1--16.
      A note on the barycentric square root of Kiepert perspectors, 6 (2006) 263--268.
    Nguyen, Minh Ha
      (with N. Dergiades) Garfunkel's inequality, 4 (2004) 153--156.
      Another proof of Fagnano's inequality, 4 (2004) 199--201.
      Another proof of van Lamoen's theorem and its converse, 5 (2005) 127--132.
      (with V. L. Bui) More on the extension of Fermat's problem, 11 (2011) 131--138.
      (with P. D. Nguyen) Synthetic proofs of two theorems related to the Feuerbach point, 12 (2012) 39--46.
    Nguyen, Pham Dat
      (with M. H. Nguyen) Synthetic proofs of two theorems related to the Feuerbach point, 12 (2012) 39--46.
    Nguyen, Thanh Dung
      Some circles associated with the Feuerbach points, 14 (2014) 403--408.
      The Feuerbach point and the Fuhrmann triangle, 16 (2016) 299--311.
      (with T. O. Dao and N. M. Pham) A strengthened version of the Erdos-Mordell inequality, 16 (2016) 317--321.
    Nguyen, Van Linh
      Another synthetic proof of Dao's generalization of the Simson line theorem, 16 (2016) 57--61.
    Nicollier, Grégoire
      Reflection triangles and their iterates, 12 (2012) 83--128; correction, 129.
      Convolution filters for triangles, 13 (2013) 61--85.
      Dynamics of the nested triangles formed by the tops of the perpendicular bisectors, 14 (2014) 31--41.
      A simple dynamic localization of the gravitational center of a triangle, 15 (2015) 263--265.
      Some theorems on polygons with one-line spectral proofs, 15 (2015) 267--273.
      Area of the orthic quadrilaterals of a convex cyclic orthodiagonal quadrilateral, 16 (2016) 233--239.
      Two six-circle theorems for cyclic pentagons, 16 (2016) 347--354. Minimal proof of a generalized Droz-Farny theorem, 16 (2016) 397--398.
    Nielsen, Colleen
      (with C. Powers) Intersecting equilateral triangles, 13 (2013) 219--225.
    Niemeyer, Jo
      A simple construction of the golden section, 11 (2011) 53.