Math - Class 9 | NCERT Archives – Mathemafia

Test Assessment

Sunil Kumar — Fri, 25 Apr 2025 04:59:44 +0000

\(\begin{aligned} \end{aligned}\)

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Probability Quiz 1

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\(\begin{aligned} \end{aligned}\)

\begin{aligned} &(\sqrt{2} + \sqrt{3})^2\\ &= 2 + 3 + 2\sqrt{6}\\ &= 5 + 2\sqrt{6} \end{aligned}

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Quiz Template

Sunil Kumar — Mon, 21 Apr 2025 08:21:14 +0000

\(\begin{aligned} \end{aligned}\)

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Probability Quiz 1

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State and Prove Pythagoras Theorem

Sunil Kumar — Tue, 11 Mar 2025 11:29:49 +0000

Pythagoras Theorem

In a right angled triangle, the square of hypotenuse is equal to the sum of squares of the other two sides.

In a right angled triangle, the square of hypotenuse is equal to the sum of squares of perpendicular and base of the triangle.

To Prove

\( \begin{aligned} &BC^2 =AB^2+AC^2\end{aligned}\)

Construction

\( \begin{aligned} &\text{Draw } AD \perp BC\end{aligned}\)

Proof

Part 1

\( \begin{aligned} &In \ \ \triangle ABC \text{ and } \triangle ADB \end{aligned}\)

\( \begin{aligned} &\angle {BAC} = \angle {ADB} = 90^{\circ}\\ &\angle B = \angle B \ \ \ \ \text{(Common)} \end{aligned}\)

By AA similarity criterion

\( \begin{aligned} &\triangle ABC \sim \triangle DBA \end{aligned}\)

Very Important: We write it as △ABC is similar to △DBA. We cannot write it similar to △ADB even though △DBA and △ADB are same triangles.

Why? Click here to read it or watch the video embedded below.

\( \begin{aligned} &\Rightarrow \frac{AB}{DB} = \frac{BC}{AB}\\\\ &\Rightarrow AB^2 = BC \times DB \ \ …(1)\end{aligned}\)

Part 2

\( \begin{aligned} &In \ \ \triangle ABC \text{ and } \triangle ADC \end{aligned}\)

\( \begin{aligned} &\angle {BAC} = \angle {ADC} = 90^{\circ}\\ &\angle C = \angle C \ \ \ \ \text{(Common)} \end{aligned}\)

By AA similarity criterion

\( \begin{aligned} &\triangle ABC \sim \triangle DAC \end{aligned}\)

\( \begin{aligned} &\Rightarrow \frac{BC}{AC} = \frac{AC}{DC}\\\\ &\Rightarrow AC^2 = BC \times DC \ \ …(2)\end{aligned}\)

Part 3

Adding (1) and (2)

\( \begin{aligned} AB^2+ AC^2 &= BC \times BD + BC \times DC \\ &=BC \times (BD + DC)\\ &=BC \times BC\\ &=BC^2\\ \end{aligned}\)

Hence proved.

Watch on YouTube

Why?

\( \begin{aligned} &\text{Why }\triangle ABC \sim \triangle DBA \text{ but } \triangle ABC \not\sim \triangle ADB\end{aligned}\)

When it comes to similarity and congruence of triangles, students always find it slightly confusing but let me tell you, it is as simple as Virat Kohli hits a six 🏏 at will. All you need is to possess good mathematics skills 😜 like Kohli has (in cricket of-course).

Ok … That’s not true. You don’t need to be as good as Kohli 😜 to understand this concept. 💃🕺 Wow!!! Nacho Nacho. 💃🕺 (If this song can win oscar, one day I will get the Fields Medal. 🏅 🏆 )

Explanation

We just proved that the triangles shown below are similar. The triangles are similar when all three corresponding angles are congruent in both the triangles. In this case:

\( \begin{aligned} \angle {BAC} &= \angle {ADB} = 90^{\circ}\\ \angle B &= \angle B \ \ \ \ \text{(Common)}\\ \Rightarrow \angle {ACB} &= \angle {DAB} \end{aligned}\)

In the picture displayed above you can clearly see mapping of the corresponding angles means the mapping of the corresponding vertices of the two triangles. So while writing the similarity expression, we must write the corresponding vertices in same order on both sides as shown in Mapping Pic.

Welldone Mathemafia 👏💯 !!!

Pytha: Oh my Goras!!! I can’t believe that you have explained it so Beautifully Colorfully.

Mathemafia: Wow! You struck out Beautifully. 💔

The post State and Prove Pythagoras Theorem appeared first on Mathemafia.

🔧 Work-Wage question 💰 A, B, & C working separately can do a work in 2, 3 & 4 days & earn Rs. 3900

Sunil Kumar — Wed, 05 Feb 2025 09:14:05 +0000

Work-wage based important question

Question: A, B, & C working separately can do a work in 2, 3 & 4 days resp. If they all work together & earn Rs. 3900 for the complete work, then how much money each of them should get?

It is a very important work-wage based question that students often find really tricky and difficult and are not able to solve it correctly. You will find 3 sections in the above tutorial:

Mistake that students do very frequently
Quick solution (For competitive exams)
Complete solution (Underlying concept explain in detail)

To watch it directly on YouTube, click: https://youtu.be/-PnsM5T5dx0

Go Green

NCERT has provided the eBooks for class 9 & 10 - Mathematics.
Click the following link to download a complete book or a particular chapter.

The post 🔧 Work-Wage question 💰 A, B, & C working separately can do a work in 2, 3 & 4 days & earn Rs. 3900 appeared first on Mathemafia.

Class 9 Chapter 15 | All Solutions | Probability

Sunil Syal — Thu, 16 Dec 2021 15:36:24 +0000

This playlist covers all the questions, concepts, theorems and examples of chapter 15 (Probability) of class 9, NCERT textbook. Every question, concept or example has been explained in a very creative manner and in layman’s language so that every student can quick grab the underlying concept. Click a thumbnail to watch the tutorial.

You are recommended to watch the introductory video before watching any of the questions or examples. In the introductory tutorial, 🎥. you will understand with the concept of probability with real life examples in detail. Also explained are the definitions of terms like trials, outcomes, Events, Dependent and Independent events, Equally Likely Outcomes, favourable outcomes, Total possible outcomes in very easy ways with relevant examples. 🎲 🎲. 🎲

Watch complete chapter on YouTube

Introduction to Probability 🔥 Concepts with Demonstration 🔥 Practical Examples

Interactive Probability Quiz 🔥 Online MCQ test with answers #mathemafia #mathematics

Example 1 Chapter 15 Class 9 | Probability | NCERT Maths

Example 2 Chapter 15 Class 9 | Probability | NCERT Maths

Example 3 Chapter 15 Class 9 | Probability | NCERT Maths

Example 4 Chapter 15 Class 9 | Probability | NCERT Maths

Example 5 Chapter 15 Class 9 | Probability | NCERT Maths

Example 6 Chapter 15 Class 9 | Probability | NCERT Maths

Example 7 Chapter 15 Class 9 | Probability | NCERT Maths

Example 8 Chapter 15 Class 9 | Probability | NCERT Maths

Example 9 Chapter 15 Class 9 | Probability | NCERT Maths

Example 10 Chapter 15 Class 9 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 1| Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 2| Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 3 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 4 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 5 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 6 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 7 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 8 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 9 (Activity) | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 10(Activity) | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 11 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 12 | Probability | NCERT Maths

Class 9 | Chapter 15 | Exercise 15.1 Question 13 | Probability | NCERT Maths

If you have good knowledge about class 9 Chapter 15 probability and If you feel confidant of if you are a mathematics lover, you can watch class 10 probability chapter as well. Believe me, it is not hard at all. You will be able to learn class 10 probability within an hour by watching the video tutorials created by Mathemafia. Click the following link to watch the class 10 probability chapter playlist.

Class 10 | Chapter 15 | Probability

You may also test your knowledge about the concepts of probability (Class 9 level) by attempting the following quiz. If you score really good in this quiz, then you can definitely go for the next level – Class 10 – Probability (link shared above).

These “Class 9 Chapter 15 Probability” tutorials can help your friends and classmates a lot. Be a sport and share this with someone you care about. You have multiple options to share this page with someone by selecting any of the following social media. I would recommend to use WhatsApp, SnapChat, Twitter, Facebook and Messenger because these are most popular among students and young people. Keep watching and sharing Mathemafia!!! 😎 Cheers!!!

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Class 9 Chapter 12 | All Solutions | Statistics

Sunil Syal — Thu, 16 Dec 2021 15:36:13 +0000

This playlist covers all the questions, concepts, theorems and examples of chapter 14 (Statistics) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial.

It is recommended to watch the introductory video, displayed as first video in the list, to understand the underlying concepts of statistics. This video is sufficient for students to understand and solve class 9 chapter 14 statistics chapter. The introduction video covers the concepts of Primary and Secondary data, grouped and ungrouped Frequency Distribution Tables, Class Interval, Overlapping and Non overlapping Class Intervals, Upper and Lower Class Limits. Every concept has been explained in detail in simple day-to-day language with very simple examples.

Watch complete chapter on YouTube

Example 1 and 2 Chapter 12 Class 9 | Statistics | NCERT Maths

Example 3 Chapter 12 Class 9 | Statistics | NCERT Maths

Introduction to Statistics | Concepts and Definition of Terms explained with practical examples

Example 4 Chapter 12 Class 9 | Statistics | NCERT Maths

Bar Graph, Histogram, Frequency Polygon in Statistics | Concepts – Graphical Representation of Data

Example 5 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 1 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 2 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 3 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 4 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

What are class marks in statistics? Learn with simple examples.

Question 5 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 6 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Why Virat Kohli's Average is 98.67 in T20 World Cup 2022 | How to find batting average

Question 7 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 8 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 9 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

Question 1 Exercise 12.1 Chapter 12 Class 9 | Statistics | NCERT Maths

You may also test your knowledge about the concepts of statistics (Class 9 level) by attempting the following quiz. In this video, you will be asked a set of 15 objective questions to test your knowledge of the concepts of probability. You will be given 15 to 30 seconds to answer after which the correct answer would be displayed. The questions cover mean, median, mode, range, grouped data, classes, class Interval, Histograms, Frequency Polygons, Bar Graphs. Good luck!!!

Following three types of graphs are very basic graphs that one must learn in statistics:

Bar Graphs
Histogram (of Uniform as well as varying width)
Frequency Polygons

It is very important for students to have a very good understanding of these topics, not just for class 9 statistics but in general as well. You can get an idea from the charts that are displayed during cricket matches: Score comparison, averages of players in different years or countries etc.

The post Class 9 Chapter 12 | All Solutions | Statistics appeared first on Mathemafia.

Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes

Sunil Syal — Thu, 16 Dec 2021 15:36:02 +0000

This playlist consists of 101 questions, concepts, theorems and examples of class 9 chapter 13 (Surface Areas and Volumes) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial.

Every video in this series has been thoroughly visualised 🔍 prior to preparing the corresponding tutorial. This chapter is always a trouble to some extent to students 👩‍🎓. The reason is more the lack of visualisation rather than the knowledge of the subject. Every shape that we refer in these questions is used in our daily life in the form of different utensils, sports objects or other household objects like: Circle, sphere, cone, cylinder , cuboid can be compared to Roti, Cricket ball, Ice Cream cone, a glass and a gift box 🎁 respectively.

In every question, real life objects are used to better explain the questions so that you can also visualise and not just solve a question momentarily. Primary focus is to help students understand the underlying concepts and not just go with RATTEBAJI.🥸 🥸 🥸

Watch complete chapter on YouTube

Example 1 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Example 2 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Surface Area of Right circular Cone | Formula derivation with practical example | Class 9 Maths

Example 3 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 1 | Surface Areas and Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 2 | Surface Areas and Volumes -Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 3 | Surface Areas and Volumes | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 4 | Surface Areas and Volumes | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 5 | Surface Areas and Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 6 | Surface Areas and Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 7 | Surface Areas and Volumes -Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 8 | Surface Areas and Volumes – Cone | NCERT Maths

Example 4 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 5 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 6 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 7 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 1 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 2 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 3 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 4 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 5 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 6 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 7 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 8 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Volume of Cylinder vs Cone | Concepts explained with practical experiment | Class 9 Maths

Example 8 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Example 9 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Right circular Cone | Concepts with Demonstration | Activity | Experiment | Practical

Question 1 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 2 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 3 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 4 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 5 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 6 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 7 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 8 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 9 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

1 Litres is equal to 1000 Cubic centimetre | Concepts with Demonstration | Activity | Experiment

Example 10 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 11 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 12 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Question 1 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 2 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 3 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 4 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 5 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 6 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 7 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 8 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

There has been a lot of efforts 🏋️‍♀️ 🏋️‍♀️ 🏋️‍♀️ put in all these videos (Class 9 Chapter 13) and it will be really great and helpful if you share these videos with your friends 👯‍♀️ 👯‍♀️ 👯‍♀️ and classmates. You can share through WhatsApp, SnapChat, Messenger etc. Click any of the following icons to share it now.

The post Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes appeared first on Mathemafia.

Class 9 | Chapter 10 | All Solutions | Heron’s Formula

Sunil Syal — Thu, 16 Dec 2021 15:35:49 +0000

This playlist covers all the questions, concepts, theorems and examples of chapter 12 (Heron’s Formula) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial.

Watch complete chapter on YouTube

Class 9 Chapter 10 Example 1 💁👌😍 Calculate Area of Triangle by using Heron's Formula | NCERT Maths

Class 9 Chapter 10 Example 2 – Calculate Area of Triangle by using Heron's Formula | NCERT Maths

Class 9 Chapter 10 Example 3 – Heron's Formula | Area of Triangle given ratio of sides | NCERT Maths

Question 1 Exercise 10.1 Chapter 10 Class 9 – Heron's Formula Equilateral Triangle | NCERT Maths

Question 2 Exercise 10.1 Chapter 10 Class 9 – Find area of Triangle by Heron's Formula |NCERT Maths

Question 3 Exercise 10.1 Chapter 10 Class 9 – Find area of Triangle by Heron's Formula |NCERT Maths

Question 4 Exercise 10.1 Chapter 10 Class 9 – Area of Triangle given perimeter |NCERT Maths

Question 5 Exercise 10.1 Chapter 10 Class 9 – Area of Triangle given sides' ratio |NCERT Maths

Question 6 Exercise 10.1 Chapter 10 Class 9 – Area of Triangle given perimeter | NCERT Maths

HERON'S Formula derivation | Class 9 – Chapter 12 – Heron's Formula – Derivation

The post Class 9 | Chapter 10 | All Solutions | Heron’s Formula appeared first on Mathemafia.

Class 9 | Chapter 9 | All Solutions | Circles

Sunil Syal — Thu, 16 Dec 2021 15:35:31 +0000

This playlist covers all the questions, concepts, theorems and examples of chapter 10 (Circles) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial.

Watch complete chapter on YouTube

Theorem 9.1 Class 9 | Chapter 9 | Circles | Equal chords subtend equal angles | NCERT Maths

Theorem 9.2 Class 9 | Chapter 9 | Circles, Equal angles by chords means equal chords | NCERT Maths

Class 9 | Chapter 10 | Circles | Introduction to circles and basic definitions | NCERT Maths

Question 1 Exercise 9.1 Class 9 | Chapter 9 | Circles | solution | NCERT Maths

Question 2 Exercise 9.1 Class 9 | Chapter 9 | Circles | solution | NCERT Maths

Theorem 9.3 Class 9 | Chapter 9 | Circles Perpendicular from the centre to a chord | NCERT Maths

Theorem 9.4 Class 9 | Chapter 9 | Circles – Proof | NCERT Maths | CBSE board

Theorem 10.5 Class 9 | Chapter 10 | Circles 💁👌😍 Circle through three non collinear points

Theorem 9.5 Class 9 | Chapter 9 | Circles – Equal chords are equidistant from centre | NCERT Maths

Theorem 9.6 Class 9 | Chapter 9 | Circles – Chords equidistant from centre are equal | NCERT Maths

Example 1 Chapter 9 Class 9 | Circles – Solved | NCERT Maths | CBSE board

🔥🔥 Question 1 Exercise 9.2 Class 9 | Chapter 9 💁👌😍 Circles | Solved | NCERT Maths CBSE board

Question 2 Exercise 9.2 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 3 Exercise 9.2 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 4 Exercise 9.2 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 5 Exercise 9.2 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 6 Exercise 9.2 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Theorem 9.7 Class 9 | Chapter 9 | Circles – Angle subtended by an arc at the centre | NCERT Maths

Theorem 9.8 Class 9 | Chapter 9 | Circles – Angles in the same segment of a circle are equal

Angle in a semicircle is a right angle | NCERT Class 9 Maths | Chapter 10, Circles

Theorem 9.9 Class 9 | Ch 9 | Circles – Line segment subtending equal angles and concyclic points

Theorem 9.10 Class 9 | Ch 9 | Circles – Sum of opposite pair of cyclic quadrilateral is 180 degrees

Theorem 9.11 Class 9 Circles – Sum of pair of opposite angles of quadrilateral is 180, it's cyclic

💁👌😍 Example 2 Chapter 9 Class 9 | Maths, Circles chapter solved | NCERT Maths

Example 3 Chapter 9 Class 9 | Maths | Circles explained | NCERT Maths

Example 5 Chapter 9 Class 9 | Circles | Maths – Solved & explained | NCERT Maths

Question 1 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 2 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 3 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 4 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 5 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 6 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 7 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 8 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 9 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 10 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 11 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Question 12 Exercise 9.3 Class 9 | Chapter 9 | Circles | Solved | NCERT Maths CBSE board

Equal Or Congruent ? Lines and Angles

Question 5 Exercise 9.2 Class 9 🔥 Dubbed in Eng 🔥 Circles | Solved | NCERT Maths CBSE board

Proof – Angles in the same segment of a circle are equal – in English and 10+ languages

The post Class 9 | Chapter 9 | All Solutions | Circles appeared first on Mathemafia.

Class 9 | Chapter 11 | All Solutions | Constructions

Sunil Syal — Thu, 16 Dec 2021 15:35:13 +0000

This playlist covers all the questions, concepts, theorems and examples of chapter 11 (Constructions) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial.

Watch complete chapter on YouTube

Class 9 |Chapter 11 | 11.1 : To construct the bisector of a given angle |Constructions | NCERT Maths

Class 9 |Chapter 11 |Constructions | 11.2 Perpendicular bisector of given line segment| NCERT Maths

Class 9 |Chapter 11 |Constructions 11.3 60 degrees angle at the initial point of a ray| NCERT Maths

Class 9| Chapter 11| Constructions 11.4 Triangle – given base, angle and sum of 2 sides |NCERT Maths

Class 9 | Chapter 11 | Constructions 11.5 Triangle given base, angle, diff of 2 sides | NCERT Maths

Class 9 | Chapter 11 | Constructions 11.6 Triangle given perimeter and two base angles| NCERT Maths

The post Class 9 | Chapter 11 | All Solutions | Constructions appeared first on Mathemafia.

Math - Class 9 | NCERT Archives – Mathemafia

Test Assessment

Complexity Meter

Attempt all questions and then click SUBMIT QUIZ button.

- Press Left and Right arrow keys on desktop to quickly load questions.- On touch devices, swipe Left / Right on the question to load Next / Previous question.Click here to hide this message.

Quiz Template

Complexity Meter

Attempt all questions and then click SUBMIT QUIZ button.

- Press Left and Right arrow keys on desktop to quickly load questions.- On touch devices, swipe Left / Right on the question to load Next / Previous question.Click here to hide this message.

State and Prove Pythagoras Theorem

Pythagoras Theorem

Proof

Why?

Welldone Mathemafia 👏💯 !!!

🔧 Work-Wage question 💰 A, B, & C working separately can do a work in 2, 3 & 4 days & earn Rs. 3900

Work-wage based important question

Go Green

Class 9 Chapter 15 | All Solutions | Probability

Class 9 Chapter 12 | All Solutions | Statistics

Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes

Class 9 | Chapter 10 | All Solutions | Heron’s Formula

Class 9 | Chapter 9 | All Solutions | Circles

Class 9 | Chapter 11 | All Solutions | Constructions

- Press Left and Right arrow keys on desktop to quickly load questions.
- On touch devices, swipe Left / Right on the question to load Next / Previous question.
Click here to hide this message.

- Press Left and Right arrow keys on desktop to quickly load questions.
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Click here to hide this message.