Class 9 | Chapter 6 | Lines and Angles | Example 1

14 Sep
Class 9 - Lines & Angles, , , , ,

Example 1: In Fig. 6.9, lines PQ and RS intersect each other at point O. If ∠ POR : ∠ ROQ = 5 : 7, find all the angles.

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Example 2

Prerequisite

It is a very easy question to solve. Vertically opposite angles theorem is used to solve this sum. Just in case you are not aware of the ratios concept, have a look at the following video tutorial.

Ratios

 

Theorem: Vertically opposite angles

Chapter 6 – Lines and Angles

Mathemafia Logo - 75 px=> Axioms – Lines and Angles

This playlist covers all the questions, concepts, theorems and examples of chapter 6 (Lines and Angles) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial. 

Watch complete chapter on YouTube
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Theorems

Theorem 6.1

Theorem 6.2

Theorem 6.3

Theorem 6.4

Theorem 6.5

Theorem 6.6

Theorem 6.7

Theorem 6.8

Exercise 6.1

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Exercise 6.2

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Exercise 6.3

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Examples

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8

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