# CBSE Class 9 Maths Videos

## Number System

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### Rational Numbers ...

Recall the concept of number line and discuss its importance in day to day... -
### Irrational Numbers

This video explains how to differentiate between rational and irrational nu... -
### Real Numbers

This video covers the definition of real numbers, difference between the ra... -
### Laws of Exponents

This video explains the statement of the laws of exponents and simplify exp... -
### Representation on Number Line

This video covers examples on graphical representation of whole numbers, in...

## Polynomials

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### Introduction to Polynomials

This video explains the definition of polynomial and related terms, identif... -
### Remainder Theorem

Discuss various algebraic operations on Polynomials. Learn the statement a... -
### Factorisation: Factor Theorem

This video explains the factorization of polynomials using Factor Theorem a... -
### Algebraic Identities: Quadratic

Understand the Algebraic identities for quadratic Polynomials. Apply the i... -
### Algebraic Identities: Cubic Type

Listing of algebraic identities for cubic Polynomials and simplify the comp...

## Coordinate Geometry

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### Cartesian Plane ...

This video explains the basic concepts of Coordinate Geometry, discusses qu... -
### Concepts of Coordinate Geometry

Understand the basic concepts of Coordinate Geometry and discuss quadrants ... -
### Basic concepts of Coordinate Geometry

Understand the basic concepts of Coordinate Geometry and discuss quadrants ...

## Linear Equations in Two Variables

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### Forming linear equations and two variables and solving ...

Forming of linear equations in two variables from real life situations, als... -
### Solutions to Linear Equations

Find the solution of linear equations in two variables and practice proble... -
### Representing Linear Equation in X and Y axes

Representing linear equation in both x and y axes and find solution of a pa... -
### Formation of Linear Equations ...

This video explains the formation of linear equations in two variables from... -
### Solutions to Linear Equations

Find the solution of linear equations in two variables and practice prob...

## Introduction to Euclid's Geometry

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### Introduction to Euclid's Geometry

This video explains Euclid's definitions, Axioms and Postulates and explain... -
### Euclid’s Postulates

Learn Euclid's definitions, Axioms and Postulates. Understand two equivale... -
### Axioms and Postulates in Euclid's geometry ...

Learn Euclid's definitions, Axioms and Postulates.

## Lines and Angles

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### Basic Concepts of Geometry

This video explains the basic geometrical concepts like line and angle, var... -
### Transversals, interior and exterior angles made by them ...

Transversals, interior and exterior angles made by them with a pair of para... -
### Angle Sum Property of A Triangle

Find the sum of the interior angles of a triangle. Establish the relation ... -
### Parallel Lines and Co-Interior Angles ...

Parallel Lines & Co-Interior Angles -
### Basic geometrical concepts

Basic geometrical concepts like line and angle, various types of angles & t...

## Triangles

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### Congruence Criteria: SAS and ASA

This video explains the congruence criteria of triangles through SAS and AS... -
### Properties of Isosceles Triangle ...

Establish the relation between equal sides and angles in a triangle. Apply... -
### Congruence Criteria: SSS and RHS ...

This video explains the proof of congruence of right triangles and discover... -
### Relation between the sides and angles of a triangle ...

Relation between the length and measure of its opposite angle in a triangle... -
### Congruence of geometrical figures

Congruence of geometrical figures. Establish the congruence criteria of tri...

## Quadrilaterals

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### About relation between opposite angles in a parallelogr ...

Relation between opposite angles in a parallelogram. Explore the conditions... -
### Relation between the diagonals of a parallelogram ...

Establish the relation between the diagonals of the parallelogram. Conditio... -
### Mid Point Theorem

This video explains the Mid - Point theorem and its converse for a triangle... -
### Types and Angle Sum Property

. Definition of Quadrilateral & special quadrilaterals: rectangle, square,... -
### Parallelograms: Basic Properties

Parallelograms:Basic Properties

## Areas of Parallelograms and Triangles

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### Concept of Area of Region

Concept of area of Geometrical figures. Geometrical figures on the same ba... -
### Area related to Parallelograms

This video explains the relation between the area of two parallelograms,... -
### Area of Triangles

This video explains that the areas of the triangles drawn on the same base ... -
### Concept of area of Geometrical figures

Concept of area of Geometrical figures. Geometrical figures on the same bas... -
### Relation between area of two parallelogram

Relation between the area of two parallelograms, a triangle and a parallelo...

## Circles

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### Introduction to Circles ...

Define circle and its parts like radius, diameter, centre, and chord. Diff... -
### Concepts on angle subtended by a chord at a point ...

Define angle subtended by a chord at a point. Prove that equal chords subte... -
### Properties of Equal Chords

This video explains the results on equal chords and their distance from the... -
### Relation between angle subtended by an arc at centre an ...

Relation between angle subtended by an arc at centre & at any point on the ... -
### Introduction to Circles ...

Define circle and its parts like radius, diameter, centre, and chord. Diff...

## Geometric Constructions

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### Construction of Triangles

This video explains the construction of a triangle given, its base and base... -
### Basic Constructions

This video explains the construction of angle bisector and perpendicular bi... -
### Construction of triangles

Construction of a triangle given: its base& base angle & sum/difference of ... -
### Construction of angle bisector and perpendicular bisect ...

Construction of angle bisector and perpendicular bisector of a line. Constr... -
### Construction of Triangles ...

This video explains the construction of a triangle given, its base and base...

## Heron's Formula

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### Concepts and problem solving based on Heron's formula ...

Introduction to Heron's formula and using the formula to find the area of s... -
### Application of Heron's Formula

This video explains the derivation of the Heron's formula for the area of t... -
### Heron's Formula concepts

Introduction to Heron's formula and using the formula to find the area of s... -
### Heron's formula - derivation and problem-solving

Derivation of the Heron's formula for the area of triangle.. It's applicati... -
### Heron's Formula: Exam Prep Strategies

Introduction to Heron's formula and using the formula to find the area of s...

## Surface Areas and Volumes

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### Surface Area of a Cylinder

Right circular cylinder and its radius , height. Solve problem related t... -
### Surface Area of a Cone

Concepts related to right circular cone. Define slant height, height, radi... -
### Surface Area of a Cube and Cuboid ...

Find the lateral and total surface area of a cube and a cuboids. Solve re... -
### Surface Area: Sphere and Hemisphere ...

Surface Area: Sphere & Hemisphere -
### Volume of A Cuboid

Understand the basic concepts related to the volumes of cuboids and cubes....

## Statistics

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### Grouping and Tabulation of Data

Meaning, origin & development of statistics, types of statistical data. Pr... -
### Cumulative Frequency of a particular class-interval ...

Cumulative Frequency of a particular class-interval. Representation of data... -
### Measures of Central Tendency

Explore the three main measures of central tendency, namely mean, median a... -
### Grouping and Tabulation of Data ...

Meaning, origin & development of statistics, types of statistical data. Pr... -
### Cumulative Frequency of a particular class-interval ...

Cumulative Frequency of a particular class-interval. Representation of data...

## Probability

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### Probability: Experimental Approach

Concept of mathematical experiment, associated terms like outcomes & event... -
### Problems on Empirical Probability ...

Review the concept of experimental probability. Applications based on them... -
### Probability: Experimental Approach

Concept of mathematical experiment, associated terms like outcomes & event... -
### Problems on Empirical Probability

Review the concept of experimental probability. Applications based on them... -
### Probability: Experimental Approach

Concept of mathematical experiment, associated terms like outcomes & event...

## Number System

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### Exponents of real numbers - 1 ...

This video contains a question which is solved using law of exponents -
### Exponents of real numbers - 2 ...

This video contains a question which is solved using law of exponents -
### Irrational Numbers - 1

This video involves the question which proves a given number is irrational -
### Irrational Numbers - 2

This video explains how to find the irrational numbers between two decimal ... -
### Irrational Numbers - 3

This video contains a question which is solved using law of exponents

## Polynomials

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### Algebraic Identities: Quadratic ...

This video contains a question which is solved using square of binomials -
### Factorisation using Square identity ...

This video explains factorisation using square identity -
### Factor Theorem 1

This video contains a question which is solved using Factor theorem -
### Factor Theorem 2

This video explain an application based problem on Factor theorem. -
### Remainder Theorem

This video contains a question which is solved using Remainder theorem

## Coordinate Geometry

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### Coordinate Geometry - 1

This video explains a case study based question on finding the coordinat...

## Linear Equations in Two Variables

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### Appilcations based problem on Linear Equation in two va ...

This video explains how to form a linear equation using given statements an... -
### Solution of a Linear Equation ...

This video explains how to find the solution of a linear equation -
### Solution of Linear Equations in two variables graphical ...

This video explains how to draw the graph of a linear equation and to find ... -
### Formation of Linear Equations

This video explains a case study based question on the formation of line... -
### Solutions to Linear Equations

This video explains a case study based question on finding the solution ...

## Introduction to Euclid's Geometry

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### Parallel lines and Intersecting Lines ...

This video explains the proof of the given theorem which is based on Parall... -
### Straight Line

This video explains an application based problem on a straight line. -
### Mathematicians and their contributions-I

This video explains a case study based question based which tells us abo... -
### Mathematicians and their contributions-II

This video explains a case study based question based which tells us abo... -
### Mathematicians and their contributions-III

This video explains a case study based question based which tells us abo...

## Lines and Angles

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### Co-Interior Angles - 2

This video explains the solution of the given problem which is based on Pro... -
### Angle Sum Property of a Triangle - 1 ...

This video contains a question which is solved using the interior angle pro... -
### Angle Sum Property of a Triangle - 2 ...

This video covers the interior angle property of a triangle with the help o... -
### Angle Sum Property of a Triangle - 3 ...

This video explains how to find the measurement of an interior angle by usi... -
### Comlpementary and Supplementary Angles ...

This video explains an application based problem on Comlpementary and Suppl...

## Triangles

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### Properties of an Isosceles Triangle ...

This video solves a question based on the property of an isosceles triangle -
### Properties of Isosceles Triangle ...

This video contains a question which is solved using the property of isosce...

## Quadrilaterals

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### Relation between Parallelogram and Triangle ...

This video explains the relation between the parallelogram and the triangle... -
### Properties of a Parallelogram ...

This video contains a question which is solved using the property of a para... -
### Use of Mid-point theorem

The video explains case study based type of question which is based on t... -
### Properties of Parallelogram

The video explains case study based type of question which is based on t... -
### Properties of quadrilateral

The video explains case study based type of question which is based on t...

## Areas of Parallelograms and Triangles

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### Application based problem on Quadrilateral ...

This video explains one of the applications of Quadrilateral with the help ... -
### Area of a Parallelogram given its base and height ...

This video explains a case study question which make use of the formula ... -
### Triangle and parallelogram lying on the same base and b ...

This video explains a case study question where a triangle and a paralle... -
### Triangle and parallelogram lying on the same base and b ...

This video explains a case study question where a triangle and a paralle... -
### Triangle and parallelogram lying on the same base and b ...

This video explains a case study question where a triangle and a paralle...

## Circles

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### Application based problem on a Circle -1 ...

This video contains a problem based on the concept of Circle and its Applic... -
### Application based problem on a Circle -2 ...

This video contains a question based on the concept of Circle and its Appli... -
### Cyclic Quadrilateral

This video explains an application based problem on Cyclic Quadrilateral. -
### Exterior angle of a triangle ...

This video explains an application based problem on Exterior angle of a tri... -
### Perpendicular from centre to chord ...

This video explains an application based problem on Perpendicular from cent...

## Geometric Constructions

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### Construction of a triangle given its base, base angle a ...

This video explains a case study based question which is based on the co... -
### Construction of a triangle given its base, base angle a ...

This video explains a case study based question which is based on the co... -
### Construction of a triangle given its two sides and angl ...

This video explains a case study based question which is based on the co... -
### Construction of a triangle given its two angles and sum ...

This video explains a case study based question which is based on the co...

## Heron's Formula

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### Application of Heron's Formula - 1 ...

This video explains an application of Heron's Formula. -
### Problem on Heron's Formula - 1 ...

This video explains an application of Heron's Formula. -
### Problem on Heron's Formula - 2 ...

This video explains an application of Heron's Formula. -
### Application of Heron's Formula - 2 ...

This video explains an application of Heron's Formula.

## Surface Areas and Volumes

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### Volume of a Cone

This video explain an application based problem on Volume of a Cone. -
### Suface Area of a Cylinder

This video explain an application based problem on Total Suface Area of a C... -
### Surface Area of Cube and Cuboid ...

This video explains how to find the height of the room if the other measure... -
### Volume of a Cylinder

This video explain an application based problem on Volume of a Cylinder. -
### Surface Area and volumes of a conical tent

This video explains a case study based question which is based on the co...

## Statistics

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### Frequency Polygon

This video explains how to draw frequency polygon -
### Histogram

This video explains how to draw an histogram and finding the different valu... -
### Cumulative Frequency Table(Less than type and More than ...

This video explains, how to prepare a Cumulative Frequancy Table (Less than... -
### Mean

This video explains Mean of ungrouped data. -
### Median

This video explains how to find the Median for given ungrouped data.

## Probability

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### Problem on probability - 1 ...

This video explains how to find the probability of the given event. -
### Problem on probability - 2 ...

This video explains how to find the probability of the given event. -
### Problem on probability - 3 ...

This video explains how to find the probability of the given event. -
### Probability of an event of choosing a family from a gro ...

This video explains a case study based question which tells us to find t... -
### Probability of choosing a family (out of a group of fam ...

This video explains a case study based question on finding probability o...