2000 OIM Problems/Problem 6

Problem

A convex hexagon is called "pretty" if it has four diagonals of length 1, whose ends include all the vertices of the hexagon.

1. Given any number $k$, greater than 0 and less than or equal to 1, find a pretty hexagon of area $k$.

2. Show that the area of any pretty hexagon is less than 3/2.

~translated into English by Tomas Diaz. ~orders@tomasdiaz.com

Solution

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See also

https://www.oma.org.ar/enunciados/ibe15.htm