Comprehensive Online Lectures for Class 9th Mathematics

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**1.Number Systems ** 6 Topics

**Topic 1.1 : Introduction to Number Systems**

**Topic 1.2 : Irrational Numbers**

**Topic 1.3 : Real Numbers and their Decimal Expansions**

**Topic 1.4 : Representing Real Numbers on the Number Line**

**Topic 1.5 : Operations on Real Numbers**

**Topic 1.6 : Law of Exponents for Real Numbers**

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**2.Polynomials ** 5 Topics

**Topic 2.1 : Polynomials in One Variables**

**Topic 2.2 : Zeroes of a Polynomial**

**Topic 2.3 : Remainder Theorem**

**Topic 2.4 : Factorisation of Polynomials**

**Topic 2.5 : Algebraic Identities**

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**3.Coordinate Geometry ** 3 Topics

**Topic 3.1 : Introduction to Coordinate Geometry**

**Topic 3.2 Cartesian System**

**Topic 3.3 : Plotting a Point in the Plane if its Coordinates are given**

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**4.Linear Equations In Two Variables ** 4 Topics

**Topic 4.1 : Linear Equations**

**Topic 4.2 : Solution of a Linear Equation**

**Topic 4.3 : Graph of a Linear Equation in Two Variables**

**Topic 4.4 : Equations of Lines Parallel to x-axis and y-axis**

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**5.Introduction To Euclid’s Geometry ** 2 Topics

**Topic 5.1 : Euclid's Definitions, Axioms and Postulates**

**Topic 5.2 : Equivalent Versions of Euclid's Fifth Postulate**

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**6.Lines And Angles ** 3 Topics

**Topic 6.1 : Basic Terms and Definitions**

**Topic 6.2 : Parallel Lines and a Transversal & Lines Parallel to the same Line**

**Topic 6.3 : Angle Sum Property of a Triangle**

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**7.Triangles ** 4 Topics

**Topic 7.1 : Criteria for Congruence of Triangles**

**Topic 7.2 : Some Properties of a Triangle**

**Topic 7.3 : Some More Criteria for Congruence of Triangles**

**Topic 7.4 : Inequalities in a Triangle**

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**8.Quadrilaterals ** 2 Topics

**Topic 8.1 : Introduction to Quadrilaterals and Properties of a Parallelogram**

**Topic 8.2 : The Mid-point Theorem**

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**9.Areas Of Parallelograms And Triangles ** 3 Topics

**Topic 9.1 : Figures on the same Base and Between the same Parallels**

**Topic 9.2 : Parallelograms on the same Base and between the same Parallels**

**Topic 9.3 : Triangles on the same Base and between the same Parallels**

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**10.Circles ** 5 Topics

**Topic 10.1 : Circles and its Related Terms: A Review**

**Topic 10.2 : Angle Subtended by a Chord at a Point**

**Topic 10.3 :Perpendicular from the Centre to a Chord and circle through three points**

**Topic 10.4 : Equal Chords and their Distances from the Centre**

**Topic 10.5 : Angle Subtended by an Arc of a Circle and cyclic quadrilaterals**

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**11.Constructions ** 2 Topics

**Topic-1 Basic Constructions**

**Topic-2 Some Constructions of Triangles**

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**12.Heron’s Formula ** 2 Topics

**Topic 12.1 : Area of a Triangle – by Heron’s Formula**

**Topic 12.2 : Application of Heron’s Formula in finding Areas of Quadrilaterals**

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**13.Surface Areas And Volumes ** 8 Topics

**Topic 13.1 : Surface Area of a Cuboid and a Cube**

**Topic 13.2 : Surface Area of a Right Circular Cylinder**

**Topic 13.3 : Surface Area of a Right Circular Cone**

**Topic 13.4 : Surface Area of a Sphere**

**Topic 13.5 : Volume of a Cuboid**

**Topic 13.6 : Volume of a Cylinder**

**Topic 13.7 : Volume of a Right Circular Cone**

**Topic 13.8 : Volume of a Sphere**

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**14.Statistics ** 3 Topics

**Topic-14.1 : Collection of Data**

**Topic-14.2 : Representation of Data**

**Topic-14.4 : Measures of Central Tendency**

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**15.Probability ** 1 Topics

**Topic 15.1 : Probability – An Experimental Approach**

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**MODEL TEST PAPER (UNSOLVED)**

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**MODEL TEST PAPER (SOLVED)**

Get an in-depth study of topics such as- Number systems, Polynomials, among others. Practice and improve your score with the sample papers and assignments.