# NCERT Solutions for Class 9 Maths

NCERT Solutions for Class 9 Maths  comprises of  15 Chapters  for Class 9, which contains 39 Exercises. These Solutions  are provided where each of these exercises, have been answered in detail by our team of experts which includes teachers at professionals. These solutions have been compiled in an easy to understand manner, keeping in mind, the perspective of strong, and weak students.

Download chapter wise detailed NCERT Solutions for Class 9 Maths/ CBSE Class 9 Maths NCERT Solutions .

### Chapter 1 – Number System Class 9 Maths

In chapter 1 of class IX, “Number System”, we come across operations on rational numbers, irrational numbers, real number and their decimal expansions, representing real number on the number line, operations on real numbers, and law of exponents for real numbers.

### Chapter 2 – Polynomials Class 9 Maths

Polynomials are covered in chapter 2 of classIX. The topics covered include the concepts of polynomials in one variable, zeroes of polynomial, remainder theorem, factorisation of polynomials, and algebraic identities in polynomials.

### Chapter 3 – Coordinate Geometry

The chapter 3 of class IX, Coordinate Geometry, introduces us to cartesian system and explains plotting a point in the plane if its coordinates are given.

### Chapter 4 – Linear Equations in two Variables Class 9 Maths

Concepts of linear equations, solution of a linear equation, graph of a linear equation in two variables, and equations of lines parallel to the x-axis and y- axis are discussed in chapter 4, Linear Equation In Two Variables.

### Chapter 5 – Introduction to Euclid’s Geometry

Introduction to Euclid’s Geometry discusses Euclid’s definitions, axioms and postulates,and equivalent versions of euclid’s fifth postulates.

### Chapter 6 – Lines And Angles Class 9 Maths

In chapter 6 of class IX, we learn about lines and angles.We discover basic terms and definitions,and we learn about intersecting lines and non-intersecting lines, pairs of angles, parallel lines and a transversal, lines parallel to the same line, and angles sum property of a triangle.

### Chapter 7  – Triangles Class 9 Maths

Chapter 7 of class IX introduces us to Triangles.It helps us to understand congruence of triangles, criteria for congruence of triangles, properties of a triangle, and inequalities in a triangle.

### Chapter 8 – Quadrilaterals Class 9 Maths

We come across the important concept of Quadrilaterals in chapter 8 of class IX. It discusses angle sum property of a quadrilateral, types of quadrilaterals, properties of a parallelogram, conditions for a quadrilateral to be a parallelogram, andthe mid-point theorem.

### Chapter 9 – Areas of Parallelograms And Triangles Class 9

This chapter explains figures on the same base and between the same parallels, parallelograms on the same base and between the same parallels, and triangles on the same base and between the same parallels .

### Chapter 10 – Circles Class 9 Maths

We discuss about Circles in chapter 10 of class IX. Circles and its related terms, angle subtended by a chord at a point, perpendicular from the centre to a chord, circle through three points, equal chords and their distances from the centre, angle subtended by an arc of a circle, and cyclic quadrilaterals are introduced .

### Chapter 11 – Constructions

Basic constructions and some constructions of triangles are discussed in chapter 11 of class IX.

### Chapter 12 – Heron’s Formula Class 9

In chapter 12 of class IX, Heron’s Formula is discussed. We learn to find area of a triangle by Heron’s formula, application of Heron’s formula in finding areas of quadrilaterals.

### Chapter 13 – Surface Areas and Volumes Class 9 Maths

Surface area of a cuboid and a cube, surface area of a right circular cylinder, surface area of a right circular cone, surface area of a sphere, volume of a cuboid, volume of a cylinder, volume of a right circular cone and volume of a sphere are covered in chapter 13 of class IX mathematics.

### Chapter 14 -Statistics Class 9 Maths

We learn about Statistics in chapter 14 of class IX Mathematics. Collection of data, presentation of data, graphical representation of data, measures of central tendency are explained.

### Chapter 15 – Probability Class 9 Maths

We learn about probability as an experimental approach in chapter 15 of class IX Mathematics.