Another variation of the Steiner-Lehmus theme - Sadi Abu-Saymeh, Mowaffaq Hajja, and Hassan Ali ShahAli

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    Another variation of the Steiner-Lehmus theme - Sadi Abu-Saymeh, Mowaffaq Hajja, and Hassan Ali ShahAli​

    Let the internal angle bisectors BB' and CC' of angles B and C of triangle ABC be extended to meet the circumcircle at B* and C*. The Steiner-Lehmus theorem states that if BB'=CC', then AB=AC. In this article, we investigate those triangles for which BB*=CC* and we address several issues that arise within this investigation.

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    LTTK CTV, 7/10/19
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