Class 9 Maths
Build your foundation — a triangle-area calculator, mensuration and statistics tools, and the numericals your exam repeats.
1Number SystemsRational & irrational numbers, surdsNotes2PolynomialsRemainder & factor theorems, identitiesNotes3Coordinate GeometryCartesian plane, quadrants, plotting pointsNotes4Linear Equations in Two VariablesSolve-for-y calculatorInteractive5Lines and AnglesAngle pairs, parallel linesNotes6TrianglesCongruence criteria (SSS, SAS, ASA, RHS)Notes7QuadrilateralsParallelograms and the midpoint theoremNotes8CirclesChords, arcs and cyclic quadrilateralsNotes9Heron's FormulaTriangle-area calculatorInteractive10Surface Areas and VolumesMensuration calculatorInteractive11StatisticsMean, median & mode calculatorInteractive