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## NCERT Solutions for Class 9 Maths

NCERT Solutions for Class 9 Maths are provided here that will help you solving difficult Class 9 Maths NCERT Solutions and understanding the concepts behind every questions so you can solve those problems with ease. Most of the students of Class 9 face problems while solving problem of Maths. They want easy and effective steps of solving Maths problems. So, if you're getting stuck in any of the problems than you can take help from these. These solutions will help you a lot in scoring more marks in the examination as well as develop logical thinking skills. You can get to know about various concepts while solving Class 9 Maths NCERT Solutions which will be useful in upcoming classes. We have provided Class 9 Maths solutions chapterwise so you can choose the chapters according to your need. You only need to click on the chapter name and get started.

You can also check NCERT Solutions for Class 9 Science which will make you aware about the various important topics that can effectively improve your marks in the exams. ## Chapterwise NCERT Solutions for Class 9 Maths

### Why NCERT Solutions for Class 9 Maths by StudyRankers?

Class 9 NCERT Solutions Maths are prepared by StudyRankers experts who have kept care of every point which can be difficult for students. These solutions are detailed and well explained so students can grasp the concepts easily.

The Class 9th Math textbook have total of 15 chapters that are divided into seven units. There are variety of questions provided between the chapter known as NCERT Solutions. We will start with number system and then move towards polynomials. After which we will study coordinate geometry. We will also study concepts of circles and surface areas. Lastly, we will study Statistics and Probability.

Chapter 1 - Number System

In NCERT Solutions for Class 9 Maths Chapter 1 we will learn about the two parts of real numbers, rational numbers and irrational numbers. We will learn how to find rational numbers between two rational numbers and decimal representation of rational and irrational numbers. In the previous class, we read to represent number on number line and in this class we will see how to represent terminating/non-terminating recurring decimals on the number line. We will learn another way of representing real numbers on real number line is through process of successive magnification. In this method we successively decrease the lengths of the intervals in which given number lies. We will also learn about the presentation of square roots of 2, 3 and other non-rational numbers. At last we will study about rationalisation and laws of exponents. The process of converting an irrational denominator of a number to a rational number by multiply its numerator and denominator by a suitable number is called rationalisation.

Chapter 2 - Polynomials

Chapter 2 NCERT Solutions Class 9 Maths is about polynomials of degree 1, 2 and 3 which are called linear, quadratic and cubic polynomials respectively. Polynomials containing one, two and three non-zero terms are called monomial, binomial and trinomial respectively. In this chapter, we will dealing with the degrees, coefficient, zeroes and terms of a polynomial. We will find zero of polynomial through factor and remainder theorem.

Chapter 3 - Coordinate Geometry

The branch of mathematics in which geometric problems are solved using coordinate systems is known as Coordinate Geometry. In this chapter, we are learning about the coordinate plane, axes, abscissa, ordinates, cartesian system, Quadrants etc. The plane is called the cartesian or coordinate plane and the mutually perpendicular lines are called axes. The horizontal line is called the x-axis and the vertical line is called the y-axis. The x-coordinate of a point is called the abscissa. The y-coordinate of a point is called the ordinate. The axes divide the plan in four quadrants. Two number lines mutually perpendicular to each other are called axes. One of them is horizontal and called as x-axis (as shown by XOX' in the following figure). The other line is perpendicular to XOX'. The vertical line YOY', is called y-axis. Both these lines are in the same plane, called the ‘cartesian plane’ or ‘coordinate plane’ or the ‘XY-plane’.

Chapter 4 - Linear Equations in two Variables

This chapter is about linear equations in two variables of the type ax + by + c = 0. An equation of the form ax + by + c = 0; where a, b and care real numbers, such that a and b are not both zero, is called a linear equation in two variables. The questions of this chapter is about proving a linear equation has infinite number of solutions, drawing graphs of linear equations  and solving some world problems.

Chapter 5 - Introduction to Euclid's Geometry

Euclid was a Greek mathematician, who introduced the method of proving a geometrical result by using logical reasonings on previously proved and known results. This chapter is about the Euclid's axioms and postulates. We will know the relationship between axioms, postulates and theorem. Axioms are the basic facts which are taken for granted without proof. Postulates are the basic facts which are taken for granted specific to geometry, without proof. Theorems are statements which can be proved using definitions and axioms.

Chapter 6 - Lines and Angles

An angle is formed by two rays originating from the same point. In this chapter, we will learn about complementary, supplementary and adjacent angles. There are various theorems in htis chapter such as If two lines intersect each other, then the vertically opposite angles are equal. The sum of the three angles of a triangle is 180º.

Chapter 7- Triangles

Two congruent figures have exactly the same shape and size. If two triangles are congruent, then their corresponding parts are equal. We will study about the five congruence criterion such as SAS, ASA AAS, SSS and RHS. If two sides and included angle of one triangle are equal to two sides and the included angle of the other triangle, then the two triangles are congruent. [SAS congruence rule]
If two angles and the included side of one triangle are equal to two angles and included side of the other triangle, then the two triangles are congruent. [ASA congruence rule] If two angles and one side of a triangle are equal to two angles and the corresponding side of the other triangles, then the two triangles are congruent. [AAS congruence rule] If three sides of one triangle are equal to three sides of other triangle, then the two triangles are congruent. [SSS congruence rule] If in two right triangles, hypotenuse and one side of a triangle are equal to the hypotenuse and one side of the other triangle, then the two triangles are congruent.

Class 9 Maths NCERT Solutions Chapter 8 is about Quadrilaterals. If A, B, C, D are four points in a plane such that no three of them are collinear and the line segments AB, BC, CD and DA do not intersect except at their end points, the figure formed by these four segments is called a quadrilateral. We will solve the questions based on the properties of quadrilaterals through the help of the properties of triangles.

Chapter 9 - Areas of Parallelograms and Triangles

Two congruent figures have equal areas. A diagonal of a parallelogram divides it into two triangles of equal area. Parallelograms on the same base (or equal base) and between the same parallels are equal in area. Triangles on the same base (or equal bases) and between the same parallels are equal in area.

Chapter 10 - Circles

Circle is the locus of all such points which are equidistant from a fixed point, this point is known as centre while distance of any point from centre defined as radius of circle. We will learn about chords, arcs, locus and other terms related to circles.

Chapter 11 - Constructions

In this chapter, we will extend our concepts of constructions of earlier classes by reading the construction of bisectors of line segments and construction of triangle. Some Basic constructions which we are going to construct, Construction of bisector of a line segment, Construction of bisector of a given angle Construction of Equilateral triangle Construction of a triangle when its base, sum of the other two sides and one base angle are given Construction of a triangle when its base, difference of the other two sides and one base angle are given. Construction of a triangle of given perimeter and two base angles.

Chapter 12- Heron's Formula

In this chapter, we will learn to find area of quadrilaterals, triangles and other types of polygons through Heron's formula. For finding area of a quadrilateral we divide it into various triangles. Then we use Heron’s formula to find the area of the triangles.

Chapter 13 - Surface Areas and Volumes

In this chapter, we are solving problems based on surface areas and volumes of cube, cuboids, cylinders, cones, spheres and hemispheres.

Chapter 14 - Statistics

Statistics is about the collection, presentation, analysis and interpretation of numerical data. In this chapter, we will see the ways to find the measure of central tendency mean and mode and median of ungrouped or raw data.

Chapter 15 - Probability

The numerical measure of uncertainty of an action (or activity) is called probability. This chapter deals with the problems where we have to find probability of certain events.

#### How to cover Class 9 Maths NCERT Solutions effectively?

We are knowing about the difficulty that you are facing while searching for the accurate NCERT Solutions of Class 9 Mathematics textbook so we have compiled those for you chapterwise that will help you in completing homework as well knowing about the application of formulas. It will definitely prepare for higher classes and upgrading towards higher level textbooks. If you practice smartly then Maths will prove most convenient subject for students. First you need to solve all those problems provided in the NCERT Class 9 Maths textbook and keep a schedule for this. Try revising important formulas and also their applications. You can get them easily just by solving more and more problems everyday.

You can get help through our various study materials prepared by in house faculty such as NCERT Notes for Class 9 Maths, Class 9 Maths MCQ Questions, Class 9 Maths Important Questions that will provide you clear understanding of every topic.

Why Choose Studyrankers?

Studyrankers experts have prepared topic wise animated videos, MCQs, flash cards and colourful ebooks which you can access on our app. This will provide you with an alternative option for coaching classes at your own home with ease and individual pace. These courses can be accessed offline so you don't need active internet everytime. Studyrankers flashcards will prove very beneficial for revising the chapters in easy and engaging way. It will be interesting for you to visualise all the concepts and getting all of it.

#### Where to find Class 9 Maths NCERT Solutions?

You can find accurate Class 9 Maths NCERT Solutions on Studyrankers. These solutions are arranged chapterwise and exercisewise so you can find a specific question without any problem.You can also download PDF of NCERT Solutions for Class 9 Maths so you can them anytime and start studying.

#### What are Algebraic Expressions?

An algebraic expression is the combination of constants and variable connected by the four basic operations (+,-, *, +).

#### What do you mean by origin in Coordinate Geometry?

In Coordinate Geometry, the point of intersection of x-axis and y-axis are called origin.

#### How many chapters are there in Class 9 NCERT Maths textbook?

There are total 15 chapters in CBSE Class 9 NCERT Maths textbook as per session 2020-21. The chapters names are Chapter 1- Number System, Chapter 2- Polynomials, Chapter 3- Coordinate Geometry, Chapter 4- Linear Equations in Two Variables, Chapter 5- Introduction to Euclid’s Geometry, Chapter 6- Lines and Angles, Chapter 7- Triangles, Chapter 8- Quadrilaterals, Chapter 9- Areas of Parallelograms and Triangles, Chapter 10- Circles, Chapter 11- Constructions, Chapter 12- Heron’s Formula, Chapter 13- Surface Areas and Volumes, Chapter 14- Statistics, Chapter 15- Probability.