Another verification of Fagnano's theorem - Finbarr Holland

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    Another verification of Fagnano's theorem - Finbarr Holland​

    We present a trigonometrical proof of Fagnano's theorem which states that, among all inscribed triangles in a given acute-angled triangle, the feet of its altitudes are the vertices of the one with the least perimeter.

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    LTTK CTV, 6/10/19
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