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  • Problems and solutions of the [[APMO]]. * [[1989 APMO]]
    7 KB (626 words) - 20:52, 19 August 2023
  • ...O''' problems and solutions. The first link contains the full set of test problems. The rest contain each individual problem and its solution. * [[1998 APMO Problems|Problems]]
    549 bytes (60 words) - 08:45, 30 May 2012
  • ...is a method to express [[angles]] that can be very useful in angle chasing problems where there are configuration issues. ...h>180^{\circ}</math>, taking half of a directed angle may cause unexpected problems.
    4 KB (657 words) - 19:52, 25 December 2024