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CBSE 2026–27 · Class IX
Mathematics: chapter-wise study guides
Use these topic guides for explanations, original solved examples, practice answers and investigations. The page order below follows the 15 regular Mathematics topics listed in the current CBSE course structure.
Number System
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 2Introduction to Polynomials
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 3Sequences and Progressions
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 4Exploring Algebraic Identities
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 5Linear Equations in Two Variables
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 6Coordinate Geometry
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 7Euclid’s Geometry: Axioms and Postulates
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 8Lines and Angles
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 9Triangles – Congruence Theorems
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 104-gons (Quadrilaterals)
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 11Circles
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 12Area and Perimeter
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 13Surface Area and Volume
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 14Statistics
Concept notes, worked examples, practice and an activity.
Open guide →CBSE Topic 15Introduction to Probability
Concept notes, worked examples, practice and an activity.
Open guide →