2021 AIME I Problem 11 Geometry (with lots of circles)

[@vidajohn2199]

"Yeah this way is not useful. I have another way..." Lol, thank you for the solution!

[@pawebielinski4903]

The fact that A1B1C1D1 is cyclic is a special case of a theorem of Miquel.

[@ramswaroopmohanty2730]

Osman is BACK and he doesn't seem to stop 🙂

[@vtk5581]

I'm so glad that you are BACK!!! awesome!!! please keep doing those great videos please :D.

[@abraham4124]

Thanks for presenting your solution and the thought processing behind it dear Dr Nal. Besides appreciating sharing of your knowledge with us, when an audience watches this awesome video, he/she might ask whether if using a normal paper with a compass and a ruler helps the instructor for a better explanation or not since drawing is the most fundamental part of problem solving in the field of geometry.

[@resilientcerebrum]

This questions was such a mess when I tried it, but you explained it beautifully.

[@drozfarnyline4940]

Don't stop.you are awesome.Thank you!😀

[@premprakash7429]

Thanks teacher!♥️ Easily understood 😅!

[@patricklu1380]

Great vid! I did the same thing, but forgot to multiple 11/59 by 22 :/

[@nathan4029]

This problem is basically trivial with orthic triangles

[@untermann322]

Happy pi day man

[@OsmanNal]

Thank you. I love 3.14159 !