Geodesic
Signs of equality of triangles and extreme problems
Matematičeskoe obrazovanie, no. 2 (2022), pp. 2-8 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this paper, extreme problems related to the geometry of triangles are reduced to the study of a function of one variable, one of the parameters of a triangle, using a derivative. 
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R. A. Akberdin; N. S. Gorshkov. Signs of equality of triangles and extreme problems. Matematičeskoe obrazovanie, no. 2 (2022), pp. 2-8. http://geodesic.mathdoc.fr/item/MO_2022_2_a0/

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