# NCERT Solutions for Class 9 Maths Chapter 6 Exercise 6.2

NCERT Solutions for Class 9 Maths Chapter 6 Exercise 6.2 Lines and Angles in both Hindi Medium and English Medium. UP board high school students also use these solutions as UP Board Solutions updated for academic session 2020-2021.

Videos related to exercise 6.2 in Hindi and English are also given for better understanding. All the questions are solved step by step in easy language. Videos based on CBSE Class 9 Exercise 6.2 are more helpful if you are facing problem to understand in text format.## Class 9 Maths Chapter 6 Exercise 6.2 Lines and Angles Solutions

Class: 9 | Mathematics |

Chapter: 6 | Lines and Angles |

Exercise: 6.2 | NCERT Solutions in Hindi and English Medium |

### NCERT Solutions for Class 9 Maths Chapter 6 Exercise 6.2 Lines and Angles

### Class 9 Maths Exercise 6.2 Solution in Hindi Medium Video

#### Class 9 Maths Chapter 6 Exercise 6.2 Solutions in Videos

#### More about Ray and Lines

Remember that a part (or part) of a line with two endpoints is called a line segment and a part of a line with one end is called a Ray. Note that AB marks the line segment AB and its length mark AB. AB represents Ray AB, and AB represents a line. However, we will not use these symbols, and we will mark the line segment AB, the beam AB, the length AB and the line AB having the same AB. The doubt will be very clear from the context. Sometimes lowercase letters l, m, n, etc., will be used to indicate the lines.

##### Collinear and Non-Collinear points

If three or more points are on the same line, they are called collinear points; Otherwise, they are called non-collier points. Remember that an angle is formed when two rays originate from the same end. The rays that make an angle are called the sides of the angle. The endpoint of the joining of the two rays is called the vertex of the angle. You have studied different types of angles in previous classes such as acute angle, right angle, obstetric angle, right angle and reflex angle.

##### What are the main concepts of exercise 6.2 in class CBSE standard 9 Maths?

The exercise 6.2 of CBSE Class 9 Maths includes the concepts of parallel lines, transversal, corresponding angles, alternate angles, etc.

##### Which example is considered a difficult one?

Example 5 given just before the exercise 6.2 takes time to solve and understand. This question is given based on corresponding angles, but in exams, the same question may be asked using the concepts of alternate angles.

##### Which question is most important for exams in class 9 Maths exercise 6.2?

There is a total of 6 questions in ex. 6.2 of CBSE class 9 Maths. Question number 4 asked mostly in exams. Most of the time, it is asked as it is, but sometime the digits may change.

##### Is exercise 6.2 of class 9 Maths easy?

Questions of exercise 6.2 of CBSE Class 9 Maths, always considered as an easy one. It takes less time to prepare and understand the concepts behind the questions.

###### Types of Angles

An acute angle measures between 0° and 90°, while a right angle is equal to 90°. An angle greater than 90° but less than 180° is called an angle. Also, remember that the right angle is equal to 180°. An angle that is greater than 180 ° but less than 360° is called a reflex angle. Also, two angles whose sum is 90° are called complementary angles and two angles whose sum is 180° are called complementary angles. You have also studied the adjacent angles in previous classes. Two angles are adjacent if they have a common vertex, a joint arm and their abnormal sides on different sides of the joint arm.