Problem 418: Triangle, Incircle, Inradius, Equal
Tangent circles, Radius
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about: Problem 418: Triangle, Incircle, Equal Tangent circles, Radius,
Online Learning.
The figure shows a triangle ABC with
inradius r and AC = b. Prove that the radius x of the equal circles of
centers D and E tangent at F and tangent to the sides of triangle is:
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