NCERT Solutions for Class 9 Maths Chapter 7 Triangles **Exercise 7.1**, **Exercise 7.2**, **Exercise 7.3**, **Exercise 7.4** and **Exercise 7.5** – त्रिभुज की **प्रश्नावली 7.1**, **प्रश्नावली 7.2**, **प्रश्नावली 7.3**, **प्रश्नावली 7.4** और **प्रश्नावली 7.5** in PDF form to free download in * Hindi Medium* and

*for the students studying*

**English Medium****NCERT Books**based on the

**CBSE Curriculum 2018-19**.

## NCERT Solutions for Class 9 Maths Chapter 7

**Go Back to NCERT Solutions for Class 9 Maths Main Page**

### Class 9 Maths Chapter 7 Triangles त्रिभुज Solutions

#### Hindi Medium and English Medium

- Class 9 Maths Chapter 7 Exercise 7.1 Solutions
- Class 9 Maths Chapter 7 Exercise 7.2 Solutions
- Class 9 Maths Chapter 7 Exercise 7.3 Solutions
- Class 9 Maths Chapter 7 Exercise 7.4 Solutions
- Class 9 Maths Chapter 7 Optional Exercise 7.5 Solutions
**NCERT Books for Class 9 All Subjects****NCERT Exemplar Problems Solutions****Study Material for 2018-2019 – English Medium****Study Material for 2018-2019 – Hindi Medium**

### 9 Maths Chapter 7 Exercise 7.1 in English

NCERT Solutions for class 9 Maths Exercise 7.1 in English medium free download. For the solutions of other exercises click here **Exercise 7.2**, **Exercise 7.3**, **Exercise 7.4** and **Exercise 7.5** If you need solutions in Hindi, go for **Hindi Medium**.

#### 9 Maths Chapter 7 Exercise 7.2 in English

NCERT Solutions for Class 9 Maths chap. 7 Triangles Exercise 7.2 in English medium. Other exercises of Triangles sols are **Exercise 7.1**, **Exercise 7.3**, **Exercise 7.4** and **Exercise 7.5** In case you want sols in Hindi click go for **Hindi Medium** solutions.

#### 9 Maths Chapter 7 Exercise 7.3 in English

NCERT Solutions for class 9 Maths Chapter 7 Triangles Ex. 7.3 in English medium. See more questions in other exercises **Exercise 7.1**, **Exercise 7.2**, **Exercise 7.4** and **Exercise 7.5** and click **Hindi Medium** for sols in Hindi.

##### 9 Maths Chapter 7 Exercise 7.4 in English

NCERT Solutions for class 9 Maths Exercise 7.4 in English medium. Click for the solutions of **Exercise 7.1**, **Exercise 7.2**, **Exercise 7.3** and **Exercise 7.5** or Click **Hindi Medium** for sols in Hindi.

###### 9 Maths Chapter 7 Exercise 7.5 in English

NCERT Solutions for class 9 Maths Chapter 7 Triangles Optional Exercise 7.5 in English medium. Move to **Exercise 7.1**, **Exercise 7.2**, **Exercise 7.3** and **Exercise 7.4** and see here **Hindi Medium** solutions.

### Class 9 Maths Exercise 7.1 in Hindi

NCERT Solutions for class 9 Maths Exercise 7.1 in Hindi medium. Move here for **प्रश्नावली 7.2**, **प्रश्नावली 7.3**, **प्रश्नावली 7.4** और **प्रश्नावली 7.5** to see online. If your medium of study is English, click for * English Medium* to see the answers in English.

#### Class 9 Maths Exercise 7.2 in Hindi

9 Maths Exercise 7.2 Triangles solutions in Hindi Medium free to download. See the sols of other exercises **प्रश्नावली 7.1**, **प्रश्नावली 7.3**, **प्रश्नावली 7.4** और **प्रश्नावली 7.5** online use. Move to * English Medium* sols for English medium students.

#### Class 9 Maths Exercise 7.3 in Hindi

NCERT Solutions for class 9 Maths Exercise 7.3 in Hindi medium. See here the question-answers of **प्रश्नावली 7.1**, **प्रश्नावली 7.2**, **प्रश्नावली 7.4** और **प्रश्नावली 7.5** ONLINE. Students using **NCERT Books** in English, click for * English Medium* sols.

##### Class 9 Maths Exercise 7.4 in Hindi

9 Maths Exercise 7.4 solutions in Hindi medium free for all students (UP Board, CBSE, Bihar, Uttarakhand and Gujrat Secondary Education Board) using NCERT Books. See other exercises here **प्रश्नावली 7.1**, **प्रश्नावली 7.2**, **प्रश्नावली 7.3**, और **प्रश्नावली 7.5** and go for * English Medium* to use it in English.

###### Class 9 Maths Exercise 7.5 in Hindi

9 Maths Chapter 7 Optional Exercise 7.5 in Hindi medium free to use without any login password. Move to other exercises **प्रश्नावली 7.1**, **प्रश्नावली 7.2**, **प्रश्नावली 7.3** और **प्रश्नावली 7.4** and see the solutions in English here * English Medium* sols.

##### Important Terms and Theorems on Triangles

*Triangle*: A plane figure closed by three intersecting lines is called a triangle. Here, ‘Tri’ means THREE. A triangle has three sides, three angles and three vertices.*Congruence of Triangle*: Two triangles are congruent, if sides and angles of one triangle are equal to the corresponding sides and angles of the other triangle.*SSS (Side – Side – Side) Congruence Rule*: Two triangles are congruent, if three sides of one triangle are equal to three sides of the other triangle.*RHS (Right angle – Hypotenuse – Side) Congruence Rule*: Two right triangles are congruent, if the hypotenuse and one side of one triangle are equal to hypotenuse and one side of the other triangle.*ASA (Angle – Side – Angle) Congruence Rule*: Two triangles are congruent, if two angles and the included side of one triangle are equal to two angles and the included side of the other triangle.*SAS (Side – Angle – Side) Congruence Rule*: Two triangles are congruent, if two sides and the included angle of one triangle are equal to two sides and the included angle of the other triangle.

- Properties of a Triangle
- Angle opposite to equal sides of an isosceles triangle are equal.
- The sides opposite to equal angles of a triangle are equal.
- If two sides of a triangle are unequal then the angle opposite to the longer side is larger.
- In any triangle, the side opposite to the larger angle is larger.
- The sum of any two sides of a triangle is greater than the third side.
- The difference between any two sides of a triangle is less than its third side.
- If the bisector of the vertical angle of a triangle bisects the base, then triangle is an isosceles triangle.
- The sum of any two sides of a triangle is greater than twice the median drawn to the third side.