NCERT Solutions for Class 9 Maths Chapter 7 Triangles provides the answers and questions related to the chapter as included in the Term I CBSE Syllabus for 2021-22. Triangle, the word itself describes its meaning. “Tri” means “three” so a closed figure formed by three intersecting lines is known as a Triangle. Students must have already studied the angle sum property of a triangle in Chapter 6 of NCERT Class 9 Maths. Now, inconsequential to it, Chapter 7 of NCERT Solutions for Class 9 Maths will further brief students about the congruence of triangles and rules of congruence. Also, they will learn a few more properties of triangles and inequalities in a triangle.

Here we have provided the complete Class 9 Maths NCERT Solutions Chapter 7 Triangles in PDF format solved by experienced teachers. Students can download the free PDF of these NCERT Solutions for Class 9 by clicking on the link below to keep it handy for future reference.

## Summary of NCERT Solutions for Class 9 Maths Chapter 7 Triangles

Triangle is a part of Geometry. However, the complete Geometry of Class 9 constitutes a weightage of 22 marks out of 80 marks. Have a look at the types of questions that are expected from Geometry in the annual exam of class 9 Maths paper.

$\begin{array}{|l|l|l|l|} \hline {\text { NCERT Class } 9 \text { Maths Geometry – Marks Distribution }} \\ \hline \text { Topics } & \begin{array}{l} \text { Multiple Choice } \\ \text { Questions } \end{array} & \begin{array}{l} \text { Short } \\ \text { Questions } \end{array} & \begin{array}{l} \text { Long } \\ \text { Questions } \end{array} \\ \hline \begin{array}{l} \text { Introduction to Euclid’s Geometry, Lines and } \\ \text { Angles, Triangles, Quadrilaterals, Areas, } \\ \text { Circles, Constructions } \end{array} & \begin{array}{l} 4 \text { Qs of } 1 \text { mark } \\ \text { each } \end{array} & \begin{array}{l} \text { 2 Qs of } 3 \\ \text { marks each } \end{array} & \begin{array}{l} 2 \text { Qs of } 6 \\ \text { marks each } \end{array} \\ \hline \text { Total Marks } & 4 \text { Marks } & 6 \text { Marks } & 12 \text { Marks } \\ \hline \end{array}$

Students should practice all the questions from the exercise to score high marks in the Class 9 Maths paper. The step by step solution to all the exercises of NCERT Class 9 Maths Chapter 7 is provided below:

In previous classes, students must have used the properties of triangles for solving the questions, but now in the NCERT Textbook of Class 9 Maths Chapter 7, students will learn how to prove these properties. For solving the questions related to this topic, it is very necessary that students should know the congruence rule. So, firstly go through the theory and then look at the solved examples that are already there in the book. After that, start solving the exercise problems.

Students can also have a look at the NCERT Solutions of Class 9 for Science subject to know the answers of all the chapters with a detailed explanation.

### Important Concepts Learned in NCERT Class 9 Maths Chapter 7 – Triangles

The aim of including this Triangle Chapter in Class 9 Maths NCERT textbook is to make students know the following concepts:

1. Congruence of triangles.
2. Criteria for congruence of triangles (SAS congruence rule, ASA congruence rule, SSS congruence rule, RHS congruence rule).
3. Properties of triangles.
4. Inequalities of triangle.

We hope this information on “NCERT Solution Class 9 Maths Chapter 7” is useful for students. Click on NCERT Solutions to get the solved answers of the NCERT book for all the classes. Stay tuned for further updates on CBSE and other competitive exams. To access interactive Maths and Science Videos download “Doubtsolve” App and subscribe to YouTube Channel SSC CGL APEX COACHING.

Triangles is a very important chapter as the fundamental concepts here are carried in the higher levels of education. For this purpose, after completing the questions from the NCERT Textbook, students are recommended to solve the other textbooks which are prescribed by the CBSE Board.

• RD Sharma Solutions for Class 9 Maths Chapter 9 Triangle and its Angles

## Frequently Asked Questions on NCERT Solutions for Class 9 Maths Chapter 7

### List out the important topics covered in NCERT Solutions for Class 9 Maths Chapter 7.

The important concepts covered in NCERT Solutions for Class 9 Maths Chapter 7 are
1. Congruence of triangles.
2. Criteria for congruence of triangles (SAS congruence rule, ASA congruence rule, SSS congruence rule, RHS congruence rule).
3. Properties of triangles.
4. Inequalities of triangles.

### What is the meaning of congruence of triangles in NCERT Solutions for Class 9 Maths Chapter 7?

According to NCERT Solutions for Class 9 Maths Chapter 7 congruence of triangles states that two triangles are said to be congruent if they are copies of each other and when superposed, they cover each other exactly. In other words, two triangles are congruent if the sides and angles of one triangle are equal to the corresponding sides and angles of the other triangle.

### How is NCERT Solutions for Class 9 Maths Chapter 7 helpful for CBSE Term I exam preparation?

Practising NCERT Solutions for Class 9 Maths Chapter 7 help the students to top the CBSE Term I exams and ace the subject. These solutions are devised, based on the most updated term-wise CBSE syllabus, covering all the crucial topics of the respective subjects. Hence, solving these questions will make the students more confident to face the Term I exams. Topics given in these solutions form the basis for top scores. It also helps the students to get familiar with answering questions of all difficulty levels. These solutions are highly recommended to the students for referencing and to practice for the term-wise CBSE exams.