Orienting Yourself: The Use of Coordinates
Learn Cartesian coordinate systems, plotting points in quadrants, understanding axes, and locating positions.
Ganita Manjari is the NCERT Mathematics textbook introduced for Class 9 students under the National Curriculum Framework for School Education (NCF-SE). It is divided into Part I (Chapters 1–8) and Part II (Chapters 9–14).
Chapters 1–8 · 2026–27
Learn Cartesian coordinate systems, plotting points in quadrants, understanding axes, and locating positions.
Explore algebraic expressions, terms, coefficients, degrees of polynomials, and linear polynomial graphs.
Understand rational and irrational numbers, decimal expansions, square root representations, and number line density.
Visualise and apply standard algebraic identities, geometric models, and factorisation of expressions.
Fascinating circle geometry, chords, symmetry, circumcircles, subtended angles, and cyclic quadrilaterals.
Perimeter, area of triangles using Heron's and Brahmagupta's formulas, circle sectors, and real-world measurement.
Explore chance, experimental vs theoretical probability, sample spaces, event ranking, and tree diagrams.
Pattern recognition, sequence rules, general nth term, arithmetic and geometric progressions, and fractals.
Chapters 9–14 · 2026–27
Explore mathematical statements, logical propositions, converses, counterexamples, and deductive reasoning.
Understand data representation, frequency distributions, combining numerical quantities, and statistical interpretation.
Learn step-by-step mathematical procedures, algorithmic thinking, flowcharts, and systematic problem solving.
Investigate angle sum properties of quadrilaterals, types and properties of parallelograms, and geometric proofs.
Study linear equations in two variables, algebraic solutions, and graphical representations on the Cartesian plane.
Calculate surface areas and volumes of three-dimensional solids including cubes, cuboids, cylinders, cones, and spheres.