- 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
Class 9 Maths Notes. Chapter 8 Quadrilaterals. PDF Download Free. Question Answers.