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2008 Iran MO (3rd Round)
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2008 Iran MO (3rd Round)
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(1)
Dividing Mars
Source: Iranian National Olympiad (3rd Round) 2008
9/20/2008
There are five research labs on Mars. Is it always possible to divide Mars to five connected congruent regions such that each region contains exactly on research lab. http://i37.tinypic.com/f2iq8g.png
geometry
3D geometry
sphere