On the Kosnita point and the reflection triangle - Darij Grinberg

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    On the Kosnita point and the reflection triangle - Darij Grinberg​

    The Kosnita point of a triangle is the isogonal conjugate of the nine-point center. We prove a few results relating the reflections of the vertices of a triangle in their opposite sides to triangle centers associated with the Kosnita point.

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    LTTK CTV, 4/10/19
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