Class 9 Mathematics Chapter wise Concept Notes & formula Sheet

Kindly select Chapter get Formulas

1. Number Systems
2. Polynomials
3. Coordinate Geometry
4. Linear Equations in Two Variables
5. Introduction to Euclid's Geometry
6. Lines and Angles
7. Triangles
8. Quadrilaterals
9. Areas of Parallelograms and Triangles
10. Circles
11. Constructions
12. Heron's Formula
13. Surface Areas and Volumes
14. Statistics
15. Probability

Here is the overview of class 9 Mathematics Chapters 

Class 9 Mathematics - Complete Guide

Chapter 1: Number Systems

• Introduction to Real Numbers
• Classification of Real Numbers
• Euclid’s Division Lemma
• Fundamental Theorem of Arithmetic

Chapter 2: Polynomials

• Introduction to Polynomials
• Types of Polynomials
• Degree of a Polynomial
• Zeroes of a Polynomial
• Remainder Theorem and Factor Theorem

Chapter 3: Coordinate Geometry

• Introduction to Coordinate Geometry
• Distance Formula
• Section Formula
• Area of Triangle

Chapter 4: Linear Equations in Two Variables

• Introduction to Linear Equations
• Graphical Method of Solution
• Algebraic Methods of Solution
• Applications

Chapter 5: Introduction to Euclid’s Geometry

• Definitions and Axioms
• Postulates of Euclid
• Euclid’s Fifth Postulate
• Basic Propositions

Chapter 6: Lines and Angles

• Basic Terms and Definitions
• Properties of Angles
• Parallel Lines and Transversals
• Angle Sum Property of Triangle

Chapter 7: Triangles

• Basic Properties of Triangles
• Congruence of Triangles
• Criteria for Congruence
• Properties of Isosceles and Equilateral Triangles

Chapter 8: Quadrilaterals

• Introduction to Quadrilaterals
• Types of Quadrilaterals
• Properties of Special Quadrilaterals
• Angle Sum Property

Chapter 9: Areas of Parallelograms and Triangles

• Area of Parallelograms
• Area of Triangles
• Comparison of Areas

Chapter 10: Circles

• Introduction to Circles
• Properties of Circles
• Tangents to a Circle
• Angle Subtended by a Chord

Chapter 11: Constructions

• Introduction to Constructions
• Basic Constructions (Bisecting Angles, Drawing Perpendiculars)
• Constructing Triangles

Chapter 12: Heron’s Formula

• Introduction to Heron’s Formula
• Derivation and Application
• Area of a Triangle using Heron’s Formula

Chapter 13: Surface Areas and Volumes

• Surface Areas of Solids
• Volumes of Solids
• Cylinders, Cones, and Spheres

Chapter 14: Statistics

• Introduction to Statistics
• Mean, Median, Mode
• Graphical Representation of Data

Chapter 15: Probability

• Introduction to Probability
• Basic Definitions and Terms
• Simple Problems on Probability