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Old 2006-10-30, 12:32   #8
fetofs
 
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Aug 2005
Brazil

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Hi again! These problems are from BMO (last weekend), and they only publish the solutions 2 years after the competition, and I'm really curious. So, if you could solve the other problem I couldn't do, I'd appreciate it (the picture is attached). Note that angle B (ABC) = 70ยบ, AM=BM, AN=CN, AR=HR, H is the orthocenter, and it's asking for angle MNR.
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