Class 9th Mathematics - CBSE 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