Общ подход за установяване на зависимости между радиуси на допиращи се окръжности
A General Approach to Establish Relations Among The Radii of Tangent Circles

Summary/Abstract: A general idea is considered to establish relations among the radii of tangent circles in the plane of a given triangle. The idea is based on Euler’s formula for the distance between the radii of the circum-circle and the in-circle of the triangle and also on some other relations between the radii in question. The main results are unified in the formulation of a corresponding lemma.

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