Geodesic
Remarkable triangles
Matematičeskoe obrazovanie, no. 3 (2022), pp. 2-14 
S. I. Kublanovskii; S. G. Bershadskiy. Remarkable triangles. Matematičeskoe obrazovanie, no. 3 (2022), pp. 2-14. http://geodesic.mathdoc.fr/item/MO_2022_3_a0/
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     author = {S. I. Kublanovskii and S. G. Bershadskiy},
     title = {Remarkable triangles},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {2--14},
     year = {2022},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2022_3_a0/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

Four types of triangles are considered, in which the base is the average (arithmetic, geometric, harmonic, quadratic) of the sides. Some new properties of these triangles are described. The article is printed with a continuation.

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[2] I. Kushnir, “Klassicheskie srednie v treugolnike”, Kvant, 2013, no. 2, 32–33

[3] A. Blinkov, Klassicheskie srednie v arifmetike i geometrii, MTsNMO, M., 2012

[4] S. Kublanovskii, Evklidova geometriya v zadachakh i uprazhneniyakh, SPB, 2021 (to appear)