NCERT Mathematics Book | Class 9 Mathematics Book NCERT Question Answer Solution | NCERT Mathematics Book Download Books PDF Free | Class Mathematics Book | NCERT |
Chapter 1:Number System
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1.1 Introduction
1.2 Irrational Numbers
1.3 Real Numbers and their Decimal Expansions
1.4 Operations on Real Numbers
1.5 Laws of Exponents for Real Numbers
1.6 Summary
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Chapter 2: POLYNOMIALS
2.1 Introduction
2.2 Polynomials in One Variable
2.3 Zeroes of a Polynomial
2.4 Factorisation of Polynomials
2.5 Algebraic Identities
2.6 Summary
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Chapter 3: COORDINATE GEOMETRY
3.1 Introduction
3.2 Cartesian System
3.3 Summary
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Chapter 4: LINEAR EQUATIONS IN TWO VARIABLES 55
4.1 Introduction
4.2 Linear Equations
4.3 Solution of a Linear Equation
4.4 Summary
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Chapter 5: INTRODUCTION TO EUCLID’S GEOMETRY
5.1 Introduction
5.2 Euclid’s Definitions, Axioms and Postulates
5.3 Summary
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Chapter 6: LINES AND ANGLES
6.1 Introduction
6.2 Basic Terms and Definitions
6.3 Intersecting Lines and Non-intersecting Lines
6.4 Pairs of Angles
6.5 Lines Parallel to the Same Line
6.6 Summary
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Chapter 7: TRIANGLES
7.1 Introduction
7.2 Congruence of Triangles
7.3 Criteria for Congruence of Triangles
7.4 Some Properties of a Triangle
7.5 Some More Criteria for Congruence of Triangles
7.6 Summary
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Chapter 8: . QUADRILATERALS
8.1 Properties of a Parallelogram
8.2 The Mid-point Theorem
8.3 Summary
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Chapter 9: CIRCLES
9.1 Angle Subtended by a Chord at a Point
9.2 Perpendicular from the Centre to a Chord
9.3 Equal Chords and their Distances from the Centre
9.4 Angle Subtended by an Arc of a Circle
9.5 Cyclic Quadrilaterals
9.6 Summary
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Chapter 10: HERON’S FORMULA
10.1 Area of a Triangle – by Heron’s Formula
10.2 Summary
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Chapter 11: SURFACE AREAS AND VOLUMES
11.1 Surface Area of a Right Circular Cone
11.2 Surface Area of a Sphere
11.3 Volume of a Right Circular Cone
11.4 Volume of a Sphere
11.5 Summary
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Chapter 12: STATISTICS
12.1 Graphical Representation of Data
12.2 Summary
APPENDIX – 1 PROOFS IN MATHEMATICS
A1.1 Introduction
A1.2 Mathematically Acceptable Statements
A1.3 Deductive Reasoning
A1.4 Theorems, Conjectures and Axioms
A1.5 What is a Mathematical Proof?
A1.6 Summary
APPENDIX – 2 INTRODUCTION TO MATHEMATICAL MODELLING
A2.1 Introduction
A2.2 Review of Word Problems
A2.3 Some Mathematical Models
A2.4 The Process of Modelling, its Advantages and Limitations
A2.5 Summary
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