CBSE Class 9 Maths 2020-21
Chapter 1 – Number Systems
This chapter covers concepts such as rational numbers, irrational numbers, laws of exponents, real numbers and representation of numbers on a number line.
Chapter 2 – Polynomials
Different types of polynomials like trinomials, monomials, linear polynomials, constant polynomials and more.
Chapter 3 – Coordinate Geometry
Understand how to work with the XY plane. Also, learn about plotting points correctly on a graph paper with accurate names and notations.
Chapter 4 – Linear Equations in Two Variables
Solving linear equations and providing a graphical representation of linear equations. Learn the equation ax + by + c = 0 in two variables.
Chapter 5 – Introduction to Euclid’s Geometry
Find out how Euclid’s Geometry can be used for defining geometrical shapes.
Chapter 6 – Lines and Angles
Parallel lines, co-interior angles, transversals, angle sum property of a triangle etc.
Chapter 7 – Triangles
Isosceles triangle, congruence of geometric figures, inequalities in a triangle etc.
Chapter 8 – Quadrilaterals
Understand the properties of quadrilaterals.
Chapter 9 – Areas of Parallelograms and Triangles
Area of regions, area of parallelograms and area of triangles.
Chapter 10 – Circles
Learn about topics such as the angle subtended by an arc of a circle, the angle subtended by a chord at a point etc.
Chapter 11 – Constructions
Understand how to measure 45-degree, 60-degree and 90-degree angles while studying the topic of constructions.
Chapter 12 – Heron’s Formula
Using Heron’s formula, learn to find the area of triangles and area of polygons.
Chapter 13 – Surface Areas and Volumes
Understand the problems related to the surface areas and volumes of cones, cuboids, cylinders and more.
Chapter 14 – Statistics
Understand how to represent data through bar graphs, histograms etc.
Chapter 15 – Probability
Understand the concept of the experimental approach in probability.
