Barrow's Inequality
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Let P be an internal point of the triangle ABC. Let the angle bisectors of the three angles from P to the vertices of ABC meet its sides at A', B', and C'.
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Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
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"Barrow's Inequality"
http://demonstrations.wolfram.com/BarrowsInequality/
Wolfram Demonstrations Project
Published: March 7 2011