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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.

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.