Circles - NCERT Class 9 Maths

This chapter 10 begins with the introduction of circular objects in daily life followed by different terminologies related to circle like radius, diameter, arc, segment, circumference and sectors are stated and explained. Next, the focus shifts on angle subtended by chords at a point, perpendicular from centre to a chord, circle through three points, equal chords and their distance, angle subtended by arc, cyclic quadrilaterals and various theorems based on them. All the concepts are supported by different examples.

Exercise 10.1

Exercise 10.2

Exercise 10.3

Exercise 10.4

Exercise 10.5

Exercise 10.6