CBSE Class 9 Mathematics Course: NCERT Syllabus

Watch this introductory session on Polynomials and learn the following sub-topics in 8 minutes :

1) Definition
2) Application
3) Components
4) Degree of Polynomials
5) Types of Polynomials
6) What does not make a polynomial?
These basics will help to understand the further concepts better.

Zeros of polynomial is nothing but the root or we can say tha value of 'x'  that makes the polynomial equal to zero.

In just 7minutes learn:
1) The various Types of Polynomials(Linear, Quadratic, Cubic etc)
2) Co-efficient of polynomials
3) Zeros of a Polynomial
4) Relation between zero and coefficient.

Polynomial Long Division is an algorithm for dividing a polynomial with another polynomial of the same or lower degree.

This session covers:
1- Dividing two numbers
2- Division Algorithm
3- Dividing Polynomials
Each topic is explained in a simple,logical and easy to remember manner in less than 10 minutes.

This session is dedicated introducing a branch of mathematics called 'Coordinate Geometry' that not only deals with locating a point on a two-dimensional coordinate plane but is also widely used to find distance between any two points, locating mid-point on a line segment, etc.

Following are the topics covered in this session:

1. Overview of Coordinate geometry?

2. Overview of Coordinate System

3. Understanding Coordinate Axes

Euclid was a mathematics teacher in Alexandria in Egypt. This is session is based on what Euclid found about geometry and wrote a book on it named as 'Elements' which changed the entire prespective of geometry in and aroound the world. We will deal with all the Axioms that he put in the field of Geometry.

In our previous session who Euclid is andd what impact he made on geometry and we also learnt about the Axioms that were put forth by him. In this session we are going to learn about the five Euclid's postulate in detail. We will also learn about the Equivalent version of Euclid's fifth postulate.

When two rays intersect each other they form an angle. When two or more than two rays intersect each other, they form different types of angles.

Watch this session to strengthen your concept about angles and types of angles.

In a plane, a bunch of points form a line and intersection of two lines produces an angle.

Angles are known according to their measurment and relation with one another, watch this session to learn about different names of angles and their properties.

This video contains some more properties of angles. These properties will help us in proving many theorems related to different two dimensional figures like Triangles and Circles.

A plane figure with three sides and three angles is called a triangle. In this session, we will learn the different types of triangles based on varying side lengths and angle measurements. This session will help you learn the following things:

1) Equilateral triangle
2) Isosceles triangle
3) Scalene triangle
4) Right angled triangle
After this session you can very easily tell the difference between all these above types of triangles and know the mathematics involved in it.

A plane figure with three sides and three angles is called a triangle. In this session, we will learn the different types of triangles based on varying side lengths and angle measurements. This session will help you learn the following things:

1) Equilateral triangle
2) Isosceles triangle
3) Scalene triangle
4) Right angled triangle
After this session you can very easily tell the difference between all these above types of triangles and know the mathematics involved in it.

This is a Quiz video having Multiple Choice Questions (MCQs) that helps in revising the concepts based on congruency and similarity of Triangles in a very interesting manner.

Quadrilateral is a 2-Dimensional figure having four sides and four angles. Quadrilaterals with different combination of angles and sides are known by different names.

Watch this session on Introduction and types of Quadrilaterals and explore your knowledge on the topic.

1) Parallelogram 2) Square 3) Rectangle 4) Rhombus

Trapezium and kite are the two types of Quadrilaterals with unique features and properties. watch this session and learn about:

1) Trapezium and its types 2) Kite and Rhombus and 3) Their respective properties.

This video lecture is purely based on theorems. There are in total 4 theorems based on the shape parallelogram explained with the help of a very nice example that makes students easy to understand.

Theorems it includes:

1) Diagonal of a Quadrilateral divides it into two congruent triangles.

2) Opposite sides of a parallelogram are congruent.

3) Opposite angles of a paralleogram are congruent.

4) Diagonals of a parallelogram bisect each other.

This video contains the converse of theorems that we have learned in previous video of Quadrilateral theorem part-1. 

There are in total 3 theorems(converse) based on the shape parallelogram in continuation of the same example that makes students easy to understand.

It includes:

1) If opposite sides of a Quadrilateral are equal, its a parallelogram.

2) If a pair of opposite sides of a Quadrilateral are equal and parallel then its a parallelogram.

3) If diagonals of a Quadrilateral bisect each other then its a parallelogram

This is a problem based video where you will have to find the missing angles of different Quadrilaterals like Trapezium, Kite, Parallelogram etc. It will help you in revising the basics of the concept and will help you to understand its applications.

This video is based on Midpoint Theorem. It is one of the important theorem in the area of geometry (Triangle) to learn and understand the various applications.

We have taken a real life example to help in understanding the theorem. So watch this session and learn the concept.

This is a Quiz video having Multiple Choice Questions(MCQs) that are based on recognising the shapes by their properties. It helps in understanding and revising the concept.

This is a Quiz video on Quadrilateral that has Multiple Choice Questions(MCQs) and detailed explanation for each question.

Here, you will learn how each and every quadrilateral differ in terms of properties and also how a small change in their property results in the formation of another Quadrilateral.

Area of a figure is nothing but a number related to a part of a plane enclosed by a particular figure. In this session we are going to learn about the area of parallelogram and the area of triangle. Now, when we put these shapes i.e. parallelogram and triangle in between the parallel lines, then how their areas can be related.

Circle is a collection of points at a constant distance from a point called center. Circles is an important topic in Geometry with various real life applications. Watch this session and familiarise yourself with the various terminologies associated with parts of a circle.

Which includes:

Radius, Diameter, Chord, Secant, Segment,Circumference, Tangent, Arc and Sector.

We have been studying the various properties and terms associated with circles.

Using these basic concepts we will now learn some interesting facts about chords of a circle by proving some theorems.
In this session we have covered the following theorems in a very logical and easy manner in just 11 minutes:
1) Equal chords of a circle subtend equal angles at the centre.
2) If the angles subtended by the chords of a circle at the centre are equal, then the chords are equal.
3) The perpendicular from the centre of a circle to a chord bisects the chord.
4) The line drawn from the centre of a circle to bisect a chord is perpendicular to the chord.
5)There is one and only one circle passing through the three non-collinear points.
Understanding these theorems will help you in solving various problems related to circle.

In this session on Circles we will be studying various theorems related to circles, its chord and angles. 

This is a continuation of our previous session where will understand the remaining theorems in less than 10 minutes:
1) Equal chords of a circle (or congruent circles) are equidistant from the centre.
2) Chords equidistant from the centre of a circle are equal in length.
3) The angle subtended by an arc at the centre is double than the angle subtended by it at any point on the remaining part of the circle.
4) Angles subtended in the same segment of a circle are equal.
Each of these theorems are expalained in a very logical and easy to remember manner.

In this session on Circles we will be studying three important theorems giving relation between angles, chords and circles.

Get a detailed explanation on these theorems in less than 7 minutes:
1) If a line segment joining two points subtends equal angles lying at two other points lying on the same side of the line containing the line segment, then the four points lie on the circle.
2) The sum of a pair of opposite angles of cyclic quadrilateral is 180 degrees.
3) If the sum of a pair of opposite angles of a quadrilateral is 180 degress then the quadrilateral is cyclic.
Understanding these theorems will indeed help you in applying them for solving various problems on Circles.

Well the name says it all. In this session we are going to learn about constructing a line segment which will be perpendicular to another line segment and this same line will also divide the given line segment in two equal halves hence the name has 'bisector' word in it. This is one of the easiest and simplest geometric construction.

A line segment is a part of a line that is bounded by two distinct end points. If we wish to locate mid-point on this line segment without the use of coordinates then we can do so with the help of geometric constructions. This session will help you to learn steps of construction involved in bisection of a line segment in under 2 minutes.