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Fagnano problem

From Encyclopedia of Mathematics
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The problem in which one is required to inscribe a triangle of least-possible perimeter in a given acute-angled triangle. The solution is the so-called orthocentric triangle, that is, the triangle whose vertices are the feets of the altitudes of the given triangle. The problem was posed by G. Fagnano dei Toschi in 1775.

How to Cite This Entry:
Fagnano problem. Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Fagnano_problem&oldid=14231
This article was adapted from an original article by P.S. Modenov (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article