Posted by **John** on Monday, May 27, 2013 at 2:53am.

In triangle ABC, points D,E,F are on sides BC,CA,AB respectively such that AD,BE,CF are angle bisectors of triangle ABC. The lines AD,BE,CF are concurrent at I, the incenter of triangle ABC. If ∠BAC=92∘, what is the measure (in degrees) of ∠EIF?

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**ssrfs**, Saturday, June 1, 2013 at 6:17am
136

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