Excursion in Geometry – INMO 2019 Problem 1

Excursion in Geometry – INMO 2019 Problem 1

Sequential hints for geometry problems are useful. It is much better than ‘reading solutions’. Use this interesting problem from Indian National Math Olympiad (INMO 2019) to refresh your geometry skills. Angle Chasing can be one of the most used tools in...
Natural Geometry of Natural Numbers

Natural Geometry of Natural Numbers

How does this sound? The numbers 18 and 30 together looks like a chair.  The Natural Geometry of Natural Numbers is something that is never advertised, rarely talked about. Just feel how they feel! Let’s revise some ideas and concepts to understand the...
Really understanding Barycentric coordinates

Really understanding Barycentric coordinates

Sometimes we are interested in the relative position of a point with respect to a triangle. Is it close to the vertices? Is it closer to one of the sides compared to the other sides? This brings home the notion of mass point coordinates or barycentric coordinates....
Problem Solving Marathon Week 2

Problem Solving Marathon Week 2

We are having a full fledged Problem Solving Marathon. We are receiving wonderful responses from the end of our students which is making the session more and more alluring day by day. Here we are providing the problems and hints of “Problem Solving...
Problem Solving Marathon Week1 Solution

Problem Solving Marathon Week1 Solution

Problem Solving Marathon Week1 Solution is the effortless attempt from Cheenta’s existing student as well as from the end of mentor. Question, rules and hints are given here. Level 0 Q.1 Which of the following is equal to ? This solution is proposed by Swetaabh...