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 English Medium for the students studying NCERT Books based on the CBSE Curriculum 2018-2019.

## 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.

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