Asked by Aaa

Let the incircle of triangle $ABC$ be tangent to sides $\overline{BC}$, $\overline{AC}$, and $\overline{AB}$ at $D$, $E$, and $F$, respectively. Prove that triangle $DEF$ is acute.

I have tried proving that triangle DEF's angles were les than the opposite angles in triangle ABC, but that wasn't really complete. Can anyone help?
Answered by PsyDAG
What do all the dollar signs ($) signify?
Answered by Atticus Finch
They're just a format you can ignore them
Answered by AoPS
Please do not post the questions we give you for homework to other websites.
Answered by AoPS
haha nice try maight
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