Geodesic
Proofs for old and new triangle inequalities
The Teaching of Mathematics, XXIII (2020) no. 1, p. 30 Cet article a éte moissonné depuis la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

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In this paper, we give new elementary proofs for some old triangle inequalities and we also present proofs for new inequalities in triangle.
Classification : 97H30, H34
Keywords: problem solving, Bergström's inequality, Radon's inequality, Euler's inequality, Mitrinović's, Padoa's inequality, Bătineţu's inequality. 
@article{TM2_2020_XXIII_1_a3,
     author = {D. M. B\u{a}tine\c{t}u-Giurgiu and Neculai Stanciu},
     title = {Proofs for old and new triangle inequalities},
     journal = {The Teaching of Mathematics},
     pages = {30 },
     year = {2020},
     volume = {XXIII},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2020_XXIII_1_a3/}
}
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D. M. Bătineţu-Giurgiu; Neculai Stanciu. Proofs for old and new triangle inequalities. The Teaching of Mathematics, XXIII (2020) no. 1, p. 30 . http://geodesic.mathdoc.fr/item/TM2_2020_XXIII_1_a3/