Some monotonicity results related to the Fermat point of a triangle - Toufik Mansour and Mark Shattuck

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    Some monotonicity results related to the Fermat point of a triangle - Toufik Mansour and Mark Shattuck​

    In this paper, we establish a Fermat point analogue of the Steiner-Lehmus theorem by proving a more general monotonicity property. We also consider four pairs of segment lengths determined by intersecting Fermat point cevians to unequal sides of a triangle and determine comparable properties for these segments. Our proofs make use of trigonometric inequalities.

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    LTTK CTV, 10/10/19
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