Class 9 Mathematics Syllabus Table of Contents Toggle Unit I: Number SystemsUnit II: AlgebraUnit III: Coordinate GeometryUnit IV: GeometryUnit: V MensurationUnit: VI Statistics Unit I: Number Systems 1.Number Systems Introduction Irrational Numbers Real Numbers and Their Decimal Expansions Operations on Real Numb Unit II: Algebra 2.Polynomials Introduction Polynomials in One Variable Zeroes of a Polynomial Factorisation of Polynomials 3.Linear Equations in Two Variables IntroductionLinear EquationsSolution of a Linear Equation Unit III: Coordinate Geometry 4.Coordinate Geometry Introduction Cartesian System Unit IV: Geometry 5.Introduction to Euclid’s GeometryIntroduction Euclid’s Definitions, Axioms and Postulates 6.Lines and Angles Introduction Basic Terms and Definitions Intersecting and Non-intersecting Lines Pair of Angles Line Parallel to the Same Line 7.Triangles Introduction Congruence of Triangles Criteria for Congruence of Triangles Some Properties of Triangle More Criteria for Congruence of Triangles 8.Quadrilaterals Properties of a Parallelogram The Mid-point Theorem. 9.Circles Angle Subtended by a Chord at a Point Perpendicular from the Centre to a Chord Equal Chords and their Distance from the Centre Angle Subtended by Arc of a CircleCyclic Quadrilaterals Unit: V Mensuration 10.Heron’s Formula Area of a Triangle using Heron’s Formula 11.Surface Areas and Volumes Surface Area of a Right Circular ConeSurface Area of a SphereVolume of Right Circular ConeVolume of a Sphere Unit: VI Statistics 12.Statistics Graphical Representation of Data