Lecture one, from the beginning
Drashti Gada · YouTube
The theorem, its converse and the special triangles, taught from the start.
Pythagoras Theorem
Chapter 2 of Geometry, SSC Std 10 (English Medium). A short revision read — free, no sign-up.
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Practice Set 2.1 solved
Yogesh Sir's Backbenchers · YouTube
The practice set worked sum by sum.
Problem Set 2 worked through
Yogesh Sir's Backbenchers · YouTube
The end-of-chapter problems, where Apollonius and the harder proofs appear.