Can anybody recommend any sources to learn geometry? About level 3-4, I'm struggling in that on Brilliant as well as maths competitioms, when I often reach a dead end. Thanks for help.

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TopNewestGeometry is not my department but you can have a look at

. – حكيم الفيلسوف الضائع · 2 years, 8 months agoCoxeter, Geometry revisitedLog in to reply

Sal's videos on Geometry and Trigonometry. A great site for learning all sorts of things! Not just geometry and trig. :-=P – Vishnuram Leonardodavinci · 2 years, 10 months ago

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Rolling Ball and Insane Integral? I would be really grateful for your kindness. :) – Tunk-Fey Ariawan · 2 years, 10 months ago

Hi, Vishnuram! You almost answer all of my problems that I made. Would you be so kind as to make the solutions of these problems that you've answered recently:Log in to reply

Actually, most geometry questions make use of congruency and similarity so that is the place you should start with if you want to improve in geometry. Try different methods if you reach a dead end. :) – Jianzhi Wang · 2 years, 10 months ago

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– King Zhang Zizhong · 2 years, 10 months ago

And don't forget another important method:transformationLog in to reply

– Jianzhi Wang · 2 years, 8 months ago

ThanksLog in to reply

Challenges and thrills is a gud book for geometry according to me. – Prasad Nikam · 2 years, 10 months ago

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