Introduction and substended angle of Circles. Maths CBSE Mentoring, Class 9 Mentoring product (2026-27): lessons, tests, tasks.

1.	Introduction to circle
2.	Theorems on angle subtended by the chord at the centre

1.	Exploring the Parts of a Circle Difficulty: easy	3
2.	Analyse the circle Difficulty: easy	2
3.	TBQ - Find the required length of the chords Difficulty: easy	3
4.	TBQ - Prove the following Difficulty: medium	2
5.	Determine the angle using chords Difficulty: medium	1
6.	TBQ - Analyse and answer Difficulty: medium	4
7.	TBQ - Prove the congruence Difficulty: medium	3

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Introduction and substended angle of Circles