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Excenter of triangle

  1. Dec 30, 2013 #1
    This is just a curiosity from my part: Has anyone know the proof of "Intersection of one internal angle bisector and two external angle bisectors of triangle is the center of an excircle."? I tried some things, but no luck.
  2. jcsd
  3. Dec 30, 2013 #2


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    Gold Member

    Have you tried google?
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