Forum Geometricorum
Volume 9 (2009)
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  1. Eisso J. Atzema,  On n-sections and reciprocal quadrilaterals, 1--17.
  2. Steve Butler, The lost daughters of Gergonne, 19--26.
  3. Clark Kimberling, Mappings associated with vertex triangles, 27--39.
  4. Allan E. MacLeod, On integer relations between the area and perimeter of Heron triangles, 41--46.
  5. Jan Vonk, The Feuerbach point and reflections of the Euler line, 47--55.
  6. Zvonko Cerin, Rings of squares around orthologic triangles, 57--80.
  7. Paris Pamfilos,  On the Newton line of a quadrilateral, 81--98.
  8. Cristinel Mortici, Folding a square to identify two adjacent sides, 99--107.
  9. Harold Connelly, An extension of triangle constructions from located points, 109--112.
  10. Nicusor Minculete, Characterizations of tangential quadrilaterals, 113--118.
  11. Cosmin Pohoata, A note on the anticomplements of the Fermat points, 119--123.
  12. Paul Yiu, Heptagonal triangles and their companions, 125--148.
  13. Shao-Cheng Liu, The symmedian point and concurrent antiparallel imags, 149--154.
  14. Robert Olah-Gal and Jozsef Sandor, On trigonometric proofs of the Steiner-Lehmus theorem, 155--160.
  15. Harold Connelly and Beata Randrianantoanina, An angle bisector parallel applied to triangle construction, 161--163.
  16. Peter Yff, A family of quartics associated with a triangle, 165--171.
  17. Giovanni Lucca, Circle chains inside a circular segment, 173--179.
  18. David Graham Searby, On three circles, 181--193.
  19. Dan Ismailescu and Adam Vojdany, Class preserving dissections of convex quadrilaterals, 195--211.
  20. Dimitris Vartziotis and Joachim Wipper, On the construction of regular polygons and generalized Napoleon vertices, 213--223.
  21. Nikolaos Dergiades, A simple barycentric coordinates formula, 225--228.
  22. Paris Pamfilos, Conic homographies and bitangent pencils, 229--257.
  23. Nikolas Dergiades and Juan Carlos Salazar, Some triangle centers associated with the tritangent circles, 259--270.
  24. Nikolai Ivanov Beluhov, Ten concurrent Euler lines, 217--274.
  25. Jason Zimba, On the possibility of trigonometric proofs of the Pythagorean theorem, 275--278.
  26. Alexey V. Ustinov, On the construction of a triangle from the feet of its angle bisectors, 279--280.
  27. John F. Goehl, Jr., Pythagorean triangles with square of perimeter equal to an integer multiple of area, 281--282.