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Chapter 6 Class 9 Lines and Angles

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Updated for New NCERT Book - for 2023-24 Edition.

Get NCERT Solutions of all exercise questions and examples of Chapter 6 Class 9 Lines and Angles free at teachoo. Answers to each question has been solved with Video. Theorem videos are also available.

 

In this chapter, we will learn

  • Basic Definitions - Line, Ray, Line Segment, Angles, Types of Angles (Acute, Obtuse, Right, Straight, Reflex), Intersecting Lines, Parallel Lines
  • What is Linear Pair of Angles
  • Vertically Opposite Angles are equal
  • Angles formed by a transversal on parallel lines - Corresponding Angles, Alternate Interior Angles, Alternate Exterior Angles, Interior Angles on the same of transversal. And its properties
  • Theorem 6.6 - Lines parallel to the same line are parallel to each other
  • Angle Sum Property  of Triangle
  • Exterior Angle Property of a Triangle

 

Click on Serial Order Wise, if you want to study from the NCERT Book. 

This is useful when you are looking for an answer to a specific question.

Or

click on Concept Wise - the best way to study maths. Each chapter is divided into topics, first the topic is explained. Then, the questions of that topic, from easy to difficult.

Check it out now.

Serial order wise

  Ex 6.1
  Ex 6.2
  Examples
  Theorems
  Important Questions on Lines, Angles, Triangles

Concept wise

  Basic terms and defination
  Angles - Properties
  Angles - Problems
  Parallel lines and traversal - Properties
  Parallel lines and traversal - Problems
  Triangle - Properties
  Triangle - Problems

What's in it?

Updated for New NCERT Book - for 2023-24 Edition.

Get NCERT Solutions of all exercise questions and examples of Chapter 6 Class 9 Lines and Angles free at teachoo. Answers to each question has been solved with Video. Theorem videos are also available.

 

In this chapter, we will learn

  • Basic Definitions - Line, Ray, Line Segment, Angles, Types of Angles (Acute, Obtuse, Right, Straight, Reflex), Intersecting Lines, Parallel Lines
  • What is Linear Pair of Angles
  • Vertically Opposite Angles are equal
  • Angles formed by a transversal on parallel lines - Corresponding Angles, Alternate Interior Angles, Alternate Exterior Angles, Interior Angles on the same of transversal. And its properties
  • Theorem 6.6 - Lines parallel to the same line are parallel to each other
  • Angle Sum Property  of Triangle
  • Exterior Angle Property of a Triangle

 

Click on Serial Order Wise, if you want to study from the NCERT Book. 

This is useful when you are looking for an answer to a specific question.

Or

click on Concept Wise - the best way to study maths. Each chapter is divided into topics, first the topic is explained. Then, the questions of that topic, from easy to difficult.

Check it out now.