Forum Geometricorum
Volume 17 (2017)

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34. Nguyen Tien Dung, Three synthetic proofs of the Butterfly Theorem, 355--358.
33. Manfred Evers, On centers and central lines of triangles in the elliptic plane, 325--354.
32. Kenzi Sato, Orthocenters of simplices on spheres, 301--324.
31. Dasari Naga Vijay Krishna, On the Feuerbach triangle, 289--300.
30. Tran Quang Hung, Another simple construction of the golden section in an isosceles triangle, 287--288.
29. Ozcan Gelisgen, On the relations between truncated cuboctahedron, truncated icosidodecahedron and metrics, 273--285.
28. Albrecht Hess, A group theoretic interpretation of Poncelet's theorem, part 2: the complex case, 255--272.
27. Nikolaos Dergiades and Dimitri M. Christodoulou, The two incenters of an arbitrary convex quadrilateral, 245--254.
26. David Fraivert, Properties of the tangents to a circle that forms Pascal points on the sides of a convex quadrilateral, 223--243.
25. Jorge C. Lucero, On the elementary single-fold operations of Origami: Reflections and incidence constraints on the plane, 207--221.
24. Navneel Singhal, On the orthogonality of a median and a symmedian, 203--206.
23. Dan Stefan Marinescu and Mihai Monea, About a strengthened version of Erdos-Mordell inequality, 197--202.
22. Thomas D. Maienschein and Michael Q. Rieck, Triangle constructions based on angular coordinates, 185--195.
21. Prasanna Ramakrishnan, Projective geometry in relation to the excircles, 177--183.
20. Sandor N. Kiss and Paul Yiu, On the Tucker circles, 157--175.
19. Dorin Andrica and Dan-Stefan Marinescu, New interpolation inequalities to Euler's R >= 2r, 149--156.
18. Paris Pamfilos, Gergonne meets Sangaku, 143--148.
17. Dragutin Svrtan and Darko Veljan, Side lengths of Morley triangles and tetrahedra, 123--142.
16. Nguyen Tien Dung, Another purely synthetic proof of Lemoine's theorem, 119--121.
15. Martin Celli, Convexity and non-differentiable singularities in Mortici's paper on Fermat-Torricelli points, 115--117.
14. Glenn T. Vickers, Equilateral Jacobi triangles, 101--113.
13. Elliott A. Weinstein and John D. Klemm, An improved inequality for the perimeter of a quadrilateral, 97--100.
12. Tran Quang Hung, A simple synthetic proof of Lemoine's theorem, 93--95.
11. Jaydeep Chipalkatti, Pascal's hexagram and the geometry of the Ricochet configuration, 73--91.
10. Paris Pamfilos, Putting the icosahedron into the octahedron, 63--71.
9. Mark Shattuck, Steiner-Lehmus type results related to the Gergonne point of a triangle, 49--62.
8. Tran Quang Hung, Another simple construction of the golden section with equilateral triangles, 47--48.
7. Li Zhou, Do dogs know the bifurcation locus?, 45--46.
6. Giovanni Lucca, Chains of tangent circles inscribed in a triangle, 41--44.
5. Chai Wah Wu, Counting the number of isosceles triangles in rectangular regular grids, 31--39.
4. Giovanni Lucca, Circle chains inscribed in symmetrical lunes and integer sequences, 21--29.
3. Manfred Pietsch, The golden ratio and regular polygons, 17--19.
2. Gerasimos T. Soldatos, A toroidal approach to the Archimedean quadrature, 13--15.
1. Jan Kristian Haugland, A note on conic sections and tangent circles, 1--12.