Mathematics 9th CLASS Chapter 1: Number Systems Chapter 2: Polynomials Chapter 3: Coordinate Geometry Chapter 4: Linear Equations in Two Variables Chapter 5: Introduction to Euclids Geometry Chapter 6: Lines and Angles Chapter 7: Triangles Chapter 8: Quadrilaterals Chapter 9: Areas of Parallelograms and Triangles Chapter 10: Circles Chapter 11: Constructions Chapter 12: Heron's Formula Chapter 13: Surface Areas and Volumes Chapter 14: Statistics Chapter 15: Probability Political Science Class 9 English Class 9 Geography Class 9 Science Class 9 History Class 9 Economics Class 9