@article {MATHEDUC.05526919,
author = {Roelens, Michel},
title = {The sum of the distances to the sides of a triangle. (De som van de afstanden tot de zijden van een driehoek.)},
year = {2006},
journal = {Uitwiskeling},
volume = {22},
number = {3},
issn = {0774-6814},
pages = {8-12},
publisher = {Uitwiskeling - administratie, Nieuwrode},
abstract = {Summary: The author states that a teacher should, from time to time, solve a new problem in order to stay `fit' mathematically and to feel what pupils feel when they are confronted with an new problem. He tells about a beautiful problem he recently tried to solve: ``what is the locus of the points such that the sum of the distances to the sides of a given triangle is a fixed number?" The author found a solution using three dimensional space, and this helped him to find a simpler, plane solution.},
msc2010 = {G40xx},
identifier = {2009b.00346},
}