Forum Geometricorum
Volume 15 (2015)

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1. Nikolaos Dergiades, Generalized Tucker circles, 1--4.
2. Frank M. Jackson and Stalislav Takhaev, Heronian triangles of class K: congruent incircles cevian perspective, 5--12.
3. Tom M. Apostol and Mamikon A. Mnatsakanian, Volumes of solids swept tangentially around cylinders, 13--44.
4. Tom M. Apostol and Mamikon A. Mnatsakanian, Volumes of solids swept tangentially around general surfaces, 45--72.
5. Hrvoje Abraham and Vjekoslav Kovac, From electrostatic potentials to yet another triangle center, 73--89.
6. Tran Quang Hung, The golden section in the inscribed square of an isosceles right triangle, 91--92.
7. Roger C. Alperin, Reflections on Poncelet's pencil, 93--98.
8. Temistocle Birsan, Bounds for elements of a triangle expressed by R, r, s, 99--103.
9. Dao Thanh Oai, Equilateral triangles and Kiepert perspectors in complex numbers, 105--114.
10. Blas Herrera, Two conjectures of Victor Thebault linking tetrahedra with quadrics, 115--122.
11. Francisco Javier Garcia Capitan, Lemniscates and a locus related to a pair of median and symmedian, 123--125.
12. Emmanuel Antonio Jose Garcia, Another archimedean circle in an arbelos, 127--128.
13. Mirko Radic, About two characteristic points concerning two nested circles and their use in research of bicentric polygons, 129--157.
14. Li Zhou, Do dogs play with rulers and compasses? 159--164.
15. Eisso Atzema, On a flawed, 16th-century derivation of Brahmagupta's formula for the area of a cyclic quadrilateral, 165--172.
16. Francisco Javier Garcia Capitan, Another construction of the Simson lines through a given point, 173--176.
17. Arie Bialostocki and Rob Ely, Points on a line that maximize and minimize the ratio of the distances to two given points, 177--178.
18. Glenn T. Vickers, Reciprocal Jacobi triangles and the McCay cubic, 179--183.
19. Gotthard Weise, Pairs of cocentroidal inscribed and circumscribed triangles, 185--190.
20. Paul Yiu, The Kariya problem and related constructions, 191--201.
21. Nikolaos Dergiades, Construction of Ajima circles via centers of similitude, 203--209.
22. J. Chris Fisher, Eberhard M. Schröder, and Jan Stevens, Circle incidence theorems, 211--228.
23. Mohammed K. Azarian, A Study of Risala al-Watar wa'l Jaib (The Treatise on the Chord and Sine), 229--242.
24. Tom M. Apostol and Mamikon A. Mnatsakanian, Topological treatment of Platonic, Archimedean, and related polyhedra, 243--251.
25. Albrecht Hess, Transforming tripolar into barycentric coordinates, 253--261.
26. Grégoire Nicollier, A simple dynamic localization of the gravitational center of a triangle, 263--265.
27. Grégoire Nicollier, Some theorems on polygons with one-line spectral proofs, 267--273.
28. Paris Pamfilos, Some remarks on a Sangaku from Chiba, 275--280.