CBSE Class 9
Mathematics
Explore CBSE Class 9 Mathematics chapter by chapter.
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Chapter 1
Orienting Yourself: The Use of Coordinates
The coordinate plane and quadrants, plotting and reading points, distance between two points and the midpoint of a line segment.
CBSE Class 9 · Mathematics
Chapter 2
Introduction to Linear Polynomials
Polynomials and their degree, linear equations, linear patterns, linear growth and decay, and visualising linear relationships.
CBSE Class 9 · Mathematics
Chapter 3
The World of Numbers
Integers and fractions, rational and irrational numbers, the proof that the square root of 2 is irrational, and real numbers.
CBSE Class 9 · Mathematics
Chapter 4
Exploring Algebraic Identities
Visualising identities, factorisation of algebraic expressions using identities, and simplifying rational expressions.
CBSE Class 9 · Mathematics
Chapter 5
I'm Up and Down, and Round and Round
Circles and their symmetries, chords and the angles they subtend, concyclicity of points and the circumcircle.
CBSE Class 9 · Mathematics
Chapter 6
Measuring Space: Perimeter and Area
Perimeter and area of rectangles, parallelograms, triangles, circles and sectors, arc length and Heron's formula.
CBSE Class 9 · Mathematics
Chapter 7
The Mathematics of Maybe: Introduction to Probability
Probability in plain language, the probability scale, sample spaces, events and tree diagrams.
CBSE Class 9 · Mathematics
Chapter 8
Predicting What Comes Next: Exploring Sequences and Progressions
Explicit and recursive rules for sequences, arithmetic progressions, the sum of the first n natural numbers, and geometric progressions.
CBSE Class 9 · Mathematics
Chapter 9
Propositions and their Converses
What a proposition is, framing and testing the converse of an if-then statement, and proofs and counterexamples.
CBSE Class 9 · Mathematics
Chapter 10
How Quantities Combine: Understanding Data
Weighted means, averages of averages, mixtures, custom weights, and stacked and 100% stacked bar charts.
CBSE Class 9 · Mathematics
Chapter 11
The World of Algorithms
What an algorithm is, digit-by-digit addition, computing divisors and the GCD, and Euclid's subtraction algorithm.
CBSE Class 9 · Mathematics
Chapter 12
Quadrilaterals
Parallelogram tests, the midpoint theorem, medians and the centroid, and tiling the plane.
CBSE Class 9 · Mathematics
Chapter 13
Two Variables, One Line
Linear equations in two variables, their graphs, slope, pairs of equations, and graphical and algebraic solutions.
CBSE Class 9 · Mathematics
Chapter 14
Math of Space: Surface Area and Volume
Surface area and volume of cuboids, cylinders, cones, pyramids, spheres and hemispheres.
CBSE Class 9 · Mathematics