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19 results
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Problem
Source
Tags
Croatian Mathematical Olympiad 2012 Problem 1-3
Croatian Mathematical Olympiad 2012
Circle
Cyclic quad
Geometry
Triangle
Croatian Mathematical Olympiad 2012 Problem 2-3
Croatian Mathematical Olympiad 2012
Cyclic quad
Geometry
Incircle
Triangle
Croatian Mathematical Olympiad 2016 Problem 1-3
Croatian Mathematical Olympiad 2016
Circle
Concyclic
Cyclic quad
Geometry
Tangent
Croatian Mathematical Olympiad 2016 Problem M-3
Croatian Mathematical Olympiad 2016
Area
Circle
Cyclic quad
Geometry
Croatian Mathematical Olympiad 2019 Problem 2-3
Croatian Mathematical Olympiad 2019
Cyclic quad
Geometry
Optimization
Quad
Croatian Mathematical Olympiad 2019 Problem M-3
Croatian Mathematical Olympiad 2019
Cyclic quad
Geometry
Incircle
Tangent
Triangle
Croatian Mathematical Olympiad 2025 Problem 3-2
Croatian Mathematical Olympiad 2025
Circumcircle
Cyclic quad
Geometry
Quad
International Mathematical Olympiad 1972 Problem 2
International Mathematical Olympiad 1972
Cyclic quad
Geometry
Quad
International Mathematical Olympiad 1985 Problem 1
International Mathematical Olympiad 1985
Circle
Cyclic quad
Geometry
Tangent
International Mathematical Olympiad 1998 Problem 1
International Mathematical Olympiad 1998
Area
Cyclic quad
Geometry
Perpendicularity
Quad
International Mathematical Olympiad 2003 Problem 4
International Mathematical Olympiad 2003
Angles
Cyclic quad
Geometry
Perpendicularity
International Mathematical Olympiad 2004 Problem 5
International Mathematical Olympiad 2004
Angles
Cyclic quad
Geometry
Quad
International Mathematical Olympiad 2007 Problem 2
International Mathematical Olympiad 2007
Angles
Circle
Cyclic quad
Geometry
Parallelogram
Middle European Mathematical Olympiad 2009 Problem T-6
Middle European Mathematical Olympiad 2009
Angles
Cyclic quad
Geometry
Middle European Mathematical Olympiad 2010 Problem I-3
Middle European Mathematical Olympiad 2010
Circumcircle
Collinear
Cyclic quad
Geometry
Middle European Mathematical Olympiad 2010 Problem T-6
Middle European Mathematical Olympiad 2010
Angles
Cyclic quad
Geometry
Parallelogram
Middle European Mathematical Olympiad 2015 Problem I-3
Middle European Mathematical Olympiad 2015
Circle
Circumcircle
Concyclic
Cyclic quad
Geometry
Grade 10 2015 Problem 3
Grade 10 2015
Circle
Cyclic quad
Geometry
Triangle
Grade 11 2016 Problem 4
Grade 11 2016
Circumcircle
Cyclic quad
Geometry
Orthocenter
Triangle