Geodesic
Dvě úlohy z planimetrie
Rozhledy matematicko-fyzikální, Tome 93 (2018) no. 4, pp. 35-36.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

The first example deals with the following question: In how many nonintersecting triangles whose vertices are in the vertices of convex $n$-gon and in $m$ given points inside the $n$-gon is the $n$-gon cut? In the second the set of all points $X$ with the following property is found: If you go from $X$ to given point $B$ in a straight line, the distance to another given point $A$ increases.
Classification : 00A08, 97D50 
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     author = {Calda, Emil},
     title = {Dv\v{e} \'ulohy z planimetrie},
     journal = {Rozhledy matematicko-fyzik\'aln{\'\i}},
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Calda, Emil. Dvě úlohy z planimetrie. Rozhledy matematicko-fyzikální, Tome 93 (2018) no. 4, pp. 35-36. http://geodesic.mathdoc.fr/item/RMF_2018__93_4_a6/