## Revision Notes for ICSE Class 9 Mathematics Chapter 11 - Free PDF Download

## FAQs on ICSE Class 9 Mathematics Revision Notes Chapter 11 - Inequalities

1. How to download the revision notes for other subjects of Class 9 ICSE?

Vedantu provides you notes of every subject of class 9 ICSE. All these notes are made available to you by our experts’ teacher of class 9 has done a thorough study of the syllabi to bring the helpful and important topics concisely and understandably. You can download them going into the study material section for ICSE on Vedantu. You can register for the online tuition for class 9 subjects to study smartly. We explain each topic with practical visuals to give you better knowledge than others.

2. What are the different types of triangles?

In class 9, you study the three main types of triangles. As of now, you know a triangle is a plane figure that has three sides and angles. Depending on the length of sides and degree of angles, we name a triangle differently.

Scalene Triangle

It is a triangle whose all three sides are of different lengths. And also, all angles have different measures.

Isosceles Triangle

It is a triangle with two equal sides and opposite angles of the same degrees.

Equilateral Triangle

All three sides and angles are of equal lengths and measures.

3. What are the benefits of having revision notes of the Inequality chapter for Class 9?

There are plenty of benefits of having revision notes of particular topics that include lengthy and numerous theorems. The inequality chapter is in continuation with previous chapters you have studied. Download the revision notes of these chapters from the Vedantu website for free and you can also find many free online resources. Revision notes help you retain the concepts for a long duration. It is like reading alphabets frequently in lower classes that have made us remember them for our whole life.

4. What is the importance of Triangle Inequality theorems?

Chapter 11 of Class 9 has explained the importance of each inequality theorem in detail. There is three inequality in triangles; each will help you solve the problems based on the triangular geometry. One of the most trivial uses of inequality of triangles is to prove that the shortest path between two points is always a straight line. Download the notes provided in PDF format to know more about the application of inequality.

5. Difference between the Corollary and Theorem?

In the Inequality chapter, you read about different theorems and corollaries of triangles. A theorem is a statement that you have to prove true. And the corollary is a true statement, straightforwardly taken from the proof of a theorem. In the examination, you will find questions to prove a theorem, but the corollaries help you to solve different numerical.