The Journal of Classical Geometry is a refereed electronic journal devoted to problems of classical Euclidean geometry. It is addressed for school teachers, advanced high-school students, and everyone with an interest in classical geometry. The journal values synthetic arguments, intelligibility and illustration.
The journal focuses on new results in triangle geometry, geometry of conics, non-Euclidean and elementary combinatorial geometry. New synthetic proofs for known facts and interesting unsolved problems are also welcome.
1.
Ilya I. Bogdanov, Two theorems on the focus-sharing ellipses: a three-dimensional view, pp. 1-5.
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2.
Alexey A. Pakharev, On certain transformations preserving perspectivity of triangles, pp. 6-16.
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3.
Lev A. Emelyanov and Pavel A. Kozhevnikov, Isotomic similarity, pp. 17-22.
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4.
Arseniy V. Akopyan, Conjugation of lines with respect to a triangle, pp. 23-31.
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5.
Nguyen Minh Ha, A proof of Vittas’ Theorem and its converse, pp. 32-39.
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6.
Darij Grinberg, Ehrmann’s third Lemoine circle, pp. 40-52.
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7.
Nikolai Ivanov Beluhov, An elementary proof of Lester’s theorem, pp. 53-56.
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8.
Dmitry S. Babichev, Circles touching sides and the circumcircle for inscribed quadrilaterals, pp. 57-61.
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9.
Vladimir N. Dubrovsky, Two applications of a lemma on intersecting circles, pp. 62-64.
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10.
Alexey A. Zaslavsky, Geometry of Kiepert and Grinberg–Myakishev hyperbolas, pp. 65-71.
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11. Problem section, pp. 72-74.
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12. Geometrical olympiad in honor of I.F. Sharygin, pp. 75-86.
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