Class 9 Maths Notes

Chapter 12 Herons Formula

- Chapter 1: Number Systems
- Chapter 2: Polynomials
- Chapter 3: Coordinate Geometry
- Chapter 4: Linear Equations
- Chapter 5: Euclid's Geometry
- Chapter 6: Lines and Angles
- Chapter 7: Triangles
- Chapter 8: Quadrilaterals
- Chapter 9: Area of Parallelogram
- Chapter 10: Circles
- Chapter 11: Constructions
- Chapter 12: Heron's Formula
- Chapter 13: Surface Area
- Chapter 14: Statistics
- Chapter 15: Probability