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Discussion of Problem 1874. Football Goal

What shape is the football gate?
Posted by Nodir NAZAROV Komiljonovich 30 Jan 2014 20:15
I tried to figure it out, how 1 tree and two sticks with the length of 2 can form the area more than 4? The largest area would be rectangle. What is the trick on this problem, can anybody explain with Geometry language.

Thanks.

Edited by author 30.01.2014 20:18