important question of math class 9 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: Construction Chapter 12: Herons Formula Chapter 13: Surface area and volumes Chapter 14: Statistics Chapter 15: Probability
