Problem 419: Triangle, Cevian, Incircle,
Excircle, Inradius, Exradius, Congruence
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about: Problem 419: Triangle, Cevian, Incircle, Excircle, Inradius,
Exradius, Congruence.
The figure shows an isosceles triangle ABC
with AB = BC = 5/7AC. The inradius of triangle BEC and the exradius of
triangle ABE are equal to 17. Find the inradius of triangle ABC.
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