MathDB
Division of square

Source: INMO 1997 Problem 4

October 6, 2005
geometryperimeterinequalitiestriangle inequalitygeometry unsolved

Problem Statement

In a unit square one hundred segments are drawn from the centre to the sides dividing the square into one hundred parts (triangles and possibly quadruilaterals). If all parts have equal perimetr pp, show that 1410<p<1510\dfrac{14}{10} < p < \dfrac{15}{10}.