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Coord

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International Mathematical Olympiad 1962 Problem 3International Mathematical Olympiad 1962CoordCubeGeometry3D
International Mathematical Olympiad 1964 Problem 5International Mathematical Olympiad 1964CoordGeometryOptimizationPerpendicularity
International Mathematical Olympiad 1971 Problem 5International Mathematical Olympiad 1971ConstructionCoordGeometry
International Mathematical Olympiad 1977 Problem 1International Mathematical Olympiad 1977CoordEquilateralGeometrySquare
International Mathematical Olympiad 1978 Problem 2International Mathematical Olympiad 1978CoordGeometryPerpendicularity3D
International Mathematical Olympiad 1982 Problem 5International Mathematical Olympiad 1982CollinearCoordGeometryPolygon
International Mathematical Olympiad 1986 Problem 4International Mathematical Olympiad 1986CoordGeometryPolygon
International Mathematical Olympiad 1986 Problem 6International Mathematical Olympiad 1986ColoringCombinatoricsCoord
International Mathematical Olympiad 1987 Problem 5International Mathematical Olympiad 1987AreaConstructionCoordGeometryRational
International Mathematical Olympiad 1988 Problem 1International Mathematical Olympiad 1988CircleCoordGeometryOptimization
International Mathematical Olympiad 1992 Problem 5International Mathematical Olympiad 1992CoordInequalities3D
International Mathematical Olympiad 1996 Problem 1International Mathematical Olympiad 1996BoardCombinatoricsCoordMod
International Mathematical Olympiad 1997 Problem 1International Mathematical Olympiad 1997AreaColoringCoordGeometryParity
International Mathematical Olympiad 2007 Problem 6International Mathematical Olympiad 2007CombinatoricsCoordOptimization3D
International Mathematical Olympiad 2016 Problem 3International Mathematical Olympiad 2016AreaCircleCoordGeometryPolygon
International Mathematical Olympiad 2025 Problem 1International Mathematical Olympiad 2025ConstructionCoordGeometry
Middle European Mathematical Olympiad 2011 Problem T-3Middle European Mathematical Olympiad 2011CombinatoricsCoordGeometryOptimization
Grade 9 1995 Problem 1Grade 9 1995CoordGeometryRight triangleSquare
Grade 9 1996 Problem 3Grade 9 1996CoordGeometryLengthsPolygon
Grade 9 1999 Problem 3Grade 9 1999AbsAlgebraAreaCoord
Grade 9 2001 Problem 2Grade 9 2001CoordGeometryIncircleSquare
Grade 9 2007 Problem 2Grade 9 2007CentroidCoordGeometry
Grade 9 2018 Problem 2Grade 9 2018CoordGeometryRight triangle
Grade 9 2026 Problem 3Grade 9 2026AreaCoordGeometrySquare
Grade 9 2021 Problem 6Grade 9 2021AreaCoordGeometryTriangle
Grade 9 2018 Problem 1Grade 9 2018AreaCoordGeometry
Grade 9 2024 Problem 3Grade 9 2024CoordGeometryLengths
Grade 10 1993 Problem 3Grade 10 1993CoordGeometry
Grade 10 1996 Problem 4Grade 10 1996CircleCoordFunctionsGeometryTangent
Grade 10 2001 Problem 4Grade 10 2001AreaCoordGeometryPolygon
Grade 10 2004 Problem 4Grade 10 2004CoordGames
Grade 10 2022 Problem 3Grade 10 2022CoordGeometryOptimization
Grade 10 2024 Problem 5Grade 10 2024CircleCoordGeometryLengths
Grade 10 2026 Problem 2Grade 10 2026AlgebraCoordOptimizationQuadratics
Grade 10 2015 Problem 1Grade 10 2015AlgebraAreaCoord
Grade 11 1994 Problem 4Grade 11 1994CollinearCoordGeometry
Grade 11 2001 Problem 1Grade 11 2001CollinearCoordGeometryParallelogram
Grade 11 2020 Problem 4Grade 11 2020ColoringCombinatoricsCoordParity
Grade 11 2022 Problem 4Grade 11 2022CoordGeometryLengthsSquare
Grade 11 2022 Problem 3Grade 11 2022CoordGeometryLogSquare
Grade 12 1994 Problem 4Grade 12 1994CollinearCoordGeometry
Grade 12 1997 Problem 2Grade 12 1997CircleCoordGeometryTangent
Grade 12 1998 Problem 1Grade 12 1998CoordTriangle
Grade 12 1999 Problem 4Grade 12 1999CoordGeometrySeqSquare
Grade 12 2000 Problem 1Grade 12 2000Coord
Grade 12 2002 Problem 2Grade 12 2002CoordCubeGeometry3DTrigonometry
Grade 12 2015 Problem 2Grade 12 2015AreaCoordGeometryRight triangleTriangle
Grade 12 2020 Problem 4Grade 12 2020ColoringCombinatoricsCoordParity
Grade 12 2020 Problem 6Grade 12 2020CoordOptimization
Grade 12 2021 Problem 3Grade 12 2021CoordGeometry