# CBSE Class 9 Maths -Study Notes Chapter Wise

## Course Overview

CBSE Class 9 Maths Syllabus

#### Number System

• Introduction
•  Irrational numbers
• Real numbers and their decimal expansions
• Representing real numbers on a number line
• Representing real numbers on a number line
• Law of exponents for real numbers

#### Polynomials

• Polynomial in one variable
• Zeroes of a polynomial
• Solving linear equations having variable on both sides
• Remainder theorem
• Factorization of polynomial
• Algebraic identities

#### Coordinate geometry

• Co-ordinate System
• Cartesian Co-ordinate System
• Plotting of Points
• Distance Between Points

#### Linear equation in two variables

• Linear equations
• Solution of linear equations
• Graph of a linear equation in two variables

#### Introduction to Euclid’s geometry

• Introduction
• Euclid’s definition and postulates
• Equivalent versions of Euclid’s fifth postulate

#### Lines and angles

• Basic terms and definition
• Intersecting and non-intersecting lines
• Pair of angles: Linear pair
• Pair of angles: Vertically opposite angles
• Parallel lines and a transversal
• Lines parallel to the same line
• Angle sum property of triangle

#### Triangles

• Congruence of triangle
• Criteria for Congruence of triangle (SAS, ASA, AAS)
• Some properties of triangles
• Some more criteria for congruency of triangle (SSS, RHS)
• Inequalities in triangle

• Angle sum property of quadrilateral
• The diagonal divides a parallelogram into two congruent triangles.
• Properties of parallelogram
• The midpoint theorem

#### Areas of parallelograms and triangles

• Parallelograms and Triangles

#### Circles

• Circles and its relative terms
• Angle subtended by chord at a point
• Perpendicular from center to chord
• Circles through three points
• Equal chords and their distances from center

#### Construction

• Construction Of Angle And Perpendicular Bisector
• Construction of a triangle given its base, sum/difference of the other two sides and one base angle
• Construction of a triangle of given perimeter and base angles

#### Heron’s formula

• Heron’s formula
• Application of Heron’s formula for calculating area of triangle

#### Surface areas and volumes

• Surface area of cube and cuboid
• Surface area of right circular cylinder
• Surface area of right circular cone
• Surface area of a sphere
• Volume of a cuboid
• Volume of a cylinder
• Volume of a right circular cone
• Volume of a sphere

#### Statistics

• Collection of data & it presentation
• Graphical representation of data: grouped/ ungrouped bar graphs
• Histograms
• Frequency polygons
• Measure of Central tendency

#### Probability

• Probability- an experimental approach
• Empirical probability

Best Reference Books for CBSE Class 9 Maths besides NCERT Textbooks:

Maths is one of the most important subjects and also considered as one of the most difficult subjects of CBSE Class 9. But besides NCERT Books there some excellent reference books which can make this subject a cake walk for you.

 NCERT Textbook for class 9 Maths:  Download PDF NCERT Exemplar for Class 9 Math: Download PDF R D Sharma for Class 9 Mathematics 2019-20 Edition (Contains More Variety of Questions) R S Aggarwal for Class 9 Mathematics 2019-20 Edition