SELINA book Solutions for ICSE Class 9th Maths. Tricks to solve questions around Rational and Irrational Numbers , Compound Interest (Without using formula) , Compound Interest (Using Formula) ,Expansions (Including Substitution), Factorisation , Simultaneous (Linear) Equations (Including Problems) , Indices (Exponents) , Logarithms , Triangles (Congruency in Triangles) , Isosceles Triangles, Inequalities , Mid-point and Its Converse , Pythagoras Theorem [Proof and Simple Applications with Converse] , Rectilinear Figures (Quadrilaterals: Parallelogram, Rectangle, Rhombus, Square and Trapezium), Construction of Polygons (Using ruler and compass only) , Area Theorems , Circle ,Statistics , Mean and Median , Area and Perimeter of Plane Figures , Solids [Surface Area and Volume of 3-D Solids], Trigonometrical Ratios (Sine, Consine, Tangent of an Angle ), Trigonometrical Ratios of Standard Angles , Solution of Right Triangles , Complementary Angles ,Co-ordinate Geometry , Graphical Solution (Solution of Simultaneous Linear Equations, Graphically) ,Distance Formula in 2 minutes. ICSE Solutions for Class 9th Maths. All chapters covered for ICSE Class 9th Maths. New Videos uploaded every week. questions are solved and explained by expert mathematics teachers as per ICSE board guidelines. Understand the concepts and solutions through 2-minute videos