CLASS 10 FORMULAE & KEY POINTS Chapter 1. Real Numbers Chapter 2. Polynomials Chapter 3. Linear Equations in Two Variables Chapter 4. Quadratic Equation Chapter 5. Arithmetic Progressions(A.P.) Chapter 6. Triangles Chapter 7. Coordinate Geometry Chapter 8. Introduction to Trigonometry Chapter 9. Some Applications of Trigonometr Chapter 10. Circles Chapter 11. Areas Related to CirclesChapter 12. Surface Areas and Volumes Chapter 13. Statistics Chapter 14. Probability