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Chapter 9 Class 9 Circles

Master Chapter 9 Class 9 Circles with comprehensive NCERT Solutions, Practice Questions, MCQs, Sample Papers, Case Based Questions, and Video lessons.

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Updated new NCERT Book - 2023-24.

In Chapter 9 Class 9 of NCERT, Circles, Theorems are extremely important, we have provided detailed explanation of the theorems of circles as well as NCERT Solutions of all questions and examples.

 

In this chapter, we will learn

  • The basics - What is a circle, radius, diameter, arc, sector, segment, chord
  • Then, we do some theorems, and related questions... like
  • Equal chords subtends equal angle at the center, and its converse
  • Perpendicular from center to a chord bisects the chord, and its converse
  • Only 1 Circle can pass through 3 non-collinear points
  • Equal chords subtend equal angles at the center, and its converse
  • Angle subtended by an arc is double the angle subteneded at any other point
  • Angles in the same segment of a circle are equal
  • Then, we will learn what a Cyclic Quadrilateral is,
  • And its property - Sum of opposite angles of cyclic quadrilateral is 180

 

In addition to this, we have solved all the NCERT questions of this chapter, including Extra questions (Ex 10.6 - Optional Exercise)

 

Click on a link below to start doing the chapter

Serial order wise

Ex 9.1 Start Learning
Ex 9.2 Start Learning
Ex 9.3 Start Learning
Examples Start Learning
Theorems Start Learning
Circle - Basic Definitions Start Learning
Circle passing through 3 points Start Learning
Important Questions on Circles Start Learning

Concept wise

Terms and definations Start Learning
Angle subtended by chord at a point Start Learning
Circle through 3 points Start Learning
Equal chords and their distance from centre Start Learning
Angle subtended by arc at the centre Start Learning
Cyclic quadrilaterals Start Learning

Why Learn This With Teachoo?

Updated new NCERT Book - 2023-24.

In Chapter 9 Class 9 of NCERT, Circles, Theorems are extremely important, we have provided detailed explanation of the theorems of circles as well as NCERT Solutions of all questions and examples.

 

In this chapter, we will learn

  • The basics - What is a circle, radius, diameter, arc, sector, segment, chord
  • Then, we do some theorems, and related questions... like
  • Equal chords subtends equal angle at the center, and its converse
  • Perpendicular from center to a chord bisects the chord, and its converse
  • Only 1 Circle can pass through 3 non-collinear points
  • Equal chords subtend equal angles at the center, and its converse
  • Angle subtended by an arc is double the angle subteneded at any other point
  • Angles in the same segment of a circle are equal
  • Then, we will learn what a Cyclic Quadrilateral is,
  • And its property - Sum of opposite angles of cyclic quadrilateral is 180

 

In addition to this, we have solved all the NCERT questions of this chapter, including Extra questions (Ex 10.6 - Optional Exercise)

 

Click on a link below to start doing the chapter