2013 USAMO

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Day 1

Problem 1

In triangle $ABC$, points $

Solution

Problem 2

Solution

Problem 3

Solution

Day 2

Problem 4

Solution

Problem 5

Solution

Problem 3

Solution

See Also

2012 USAMO (ProblemsResources)
Preceded by
2012 USAMO
Followed by
2014 USAMO
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All USAMO Problems and Solutions
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