## CBSE Class 9 Maths Chapter 6 Lines and Angles Revision Notes

Revision is very important for better conceptual understanding and securing good marks, and for Revision, Revision Notes are always considered the best. CBSE Class 9 Maths Chapter 6 Lines and Angles Revision Notes can be very beneficial for students to revise all their previously prepared chapters and concepts, especially during the examination times when they have to revise the whole syllabus in a limited time period.

We, at Swiflearn, provides you the best CBSE Class 9 Maths Chapter 6 Lines and Angles Revision Notes. Free CBSE Class 9 Maths Chapter 6 Notes provided here are prepared by Subject Matter Experts at Swiflearn who have a lot of experience in teaching. CBSE Class 9 Maths Chapter 6 Revision Notes are one of the most important pieces of study material that students can use as it will aid them to study better and reduce the level of stress that they face during the hectic year.

CBSE Class 9 Maths Chapter 6 Revision Notes by **Swiflearn** are so far the best and most reliable Revision Notes for CBSE Class 9 Maths Chapter 6. These CBSE Class 9 Maths Chapter 6 Notes will surely make your learning exciting & convenient. Students can download CBSE Class 9 Maths Chapter 6 Lines and Angles Revision Notes in PDF format, use them to revise all their previously learned concepts, and hence score better in their exams.

## Introduction

In geometry, the lines and angles are important tools. A line is a collection of points along a straight path, it extends in both the directions and has no endpoints. It has no definite length. An angle is a figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

1. An angle is a union of two non-collinear rays with a common initial point.

2. Two adjacent angles are said to form a linear pair if their sum is 180°. Non-common arms of the linear pair of angles form a straight line.

3. Sum of the angles around a point is equal to 360°.

4. Two rays originating from the same endpoint form an angle.

### CBSE Class 9 Maths Chapter 6 Lines and Angles Revision Notes PDF