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International Competitions
-- International Mathematical Olympiad
-- Middle European Mathematical Olympiad
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-- Croatian Competitions
-- -- Croatian Mathematical Olympiad
-- -- Croatian National Competitions
-- -- -- Grade 9
-- -- -- Grade 10
-- -- -- Grade 11
-- -- -- Grade 12
-- -- Croatian County-Level Competitions
-- -- -- Grade 9
-- -- -- Grade 10
-- -- -- Grade 11
-- -- -- Grade 12
-- -- Croatian School-Level Competitions
-- -- -- Grade 9
-- -- -- Grade 10
-- -- -- Grade 11
-- -- -- Grade 12
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41 results
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Problem
Source
Tags
Croatian Mathematical Olympiad 2010 Problem 1-2
Croatian Mathematical Olympiad 2010
Geometry
Optimization
Right triangle
Croatian Mathematical Olympiad 2013 Problem M-3
Croatian Mathematical Olympiad 2013
Circumcircle
Geometry
Incircle
Right triangle
International Mathematical Olympiad 1959 Problem 4
International Mathematical Olympiad 1959
Construction
Geometry
Right triangle
International Mathematical Olympiad 1960 Problem 3
International Mathematical Olympiad 1960
Geometry
Right triangle
Triangle
Trigonometry
International Mathematical Olympiad 1983 Problem 4
International Mathematical Olympiad 1983
Coloring
Equilateral
Geometry
Right triangle
International Mathematical Olympiad 1988 Problem 5
International Mathematical Olympiad 1988
Area
Geometry
Inequalities
Right triangle
Triangle
International Mathematical Olympiad 2012 Problem 5
International Mathematical Olympiad 2012
Geometry
Perpendicularity
Right triangle
Triangle
International Mathematical Olympiad 2016 Problem 1
International Mathematical Olympiad 2016
Geometry
Parallelogram
Right triangle
Triangle
Middle European Mathematical Olympiad 2019 Problem T-6
Middle European Mathematical Olympiad 2019
Circumcircle
Collinear
Geometry
Right triangle
Triangle
Grade 9 1992 Problem 2
Grade 9 1992
Area
Geometry
Incircle
Right triangle
Triangle
Grade 9 1995 Problem 1
Grade 9 1995
Coord
Geometry
Right triangle
Square
Grade 9 2011 Problem 3
Grade 9 2011
Area
Construction
NT
Right triangle
Grade 9 2013 Problem 3
Grade 9 2013
Geometry
Inequalities
Right triangle
Grade 9 2018 Problem 2
Grade 9 2018
Coord
Geometry
Right triangle
Grade 9 2019 Problem 2
Grade 9 2019
Geometry
Incircle
NT
Right triangle
Triangle
Grade 9 2020 Problem 7
Grade 9 2020
NT
Primes
Right triangle
Grade 9 2023 Problem 2
Grade 9 2023
Angles
Geometry
Right triangle
Triangle
Grade 9 2024 Problem 5
Grade 9 2024
Geometry
Perpendicularity
Right triangle
Triangle
Grade 9 2025 Problem 4
Grade 9 2025
Geometry
Perpendicularity
Right triangle
Grade 9 2026 Problem 2
Grade 9 2026
Area
Geometry
Right triangle
Triangle
Grade 9 2016 Problem 1
Grade 9 2016
Area
Geometry
Right triangle
Grade 10 1992 Problem 1
Grade 10 1992
Geometry
Incircle
Right triangle
Triangle
Grade 10 1994 Problem 3
Grade 10 1994
Angles
Circle
Geometry
Right triangle
Grade 10 2021 Problem 2
Grade 10 2021
Inequalities
NT
Right triangle
Grade 10 2026 Problem 1
Grade 10 2026
Area
Geometry
Optimization
Right triangle
Grade 10 2023 Problem 4
Grade 10 2023
Geometry
Orthocenter
Right triangle
Triangle
Grade 10 2025 Problem 6
Grade 10 2025
Circle
Geometry
Incircle
Right triangle
Grade 10 2026 Problem 3
Grade 10 2026
Geometry
Right triangle
Triangle
Grade 10 2016 Problem 1
Grade 10 2016
Area
Geometry
Optimization
Right triangle
Grade 10 2019 Problem 1
Grade 10 2019
Algebra
Eq
Quadratics
Right triangle
Grade 10 2025 Problem 4
Grade 10 2025
Geometry
Perpendicularity
Right triangle
Triangle
Grade 11 1993 Problem 1
Grade 11 1993
Angles
Centroid
Geometry
Inequalities
Right triangle
Grade 11 1994 Problem 1
Grade 11 1994
Geometry
Lengths
Right triangle
Grade 11 2011 Problem 1
Grade 11 2011
Geometry
Inequalities
Right triangle
Trigonometry
Grade 11 2012 Problem 2
Grade 11 2012
Angles
Geometry
Lengths
Right triangle
Triangle
Grade 11 2025 Problem 4
Grade 11 2025
Geometry
Incircle
Right triangle
Triangle
Grade 12 2015 Problem 2
Grade 12 2015
Area
Coord
Geometry
Right triangle
Triangle
Grade 12 2026 Problem 2
Grade 12 2026
Circle
Circumcircle
Geometry
Right triangle
Grade 12 2024 Problem 6
Grade 12 2024
Geometry
Perpendicularity
Right triangle
Triangle
Grade 12 2025 Problem 7
Grade 12 2025
Geometry
Right triangle
Seq
Trigonometry
Grade 12 2026 Problem 5
Grade 12 2026
Circle
Geometry
Perpendicularity
Right triangle