### Lines & Angles Class 9 Maths Notes | StudyTution

Complementary angles, Supplementary angles, Adjacent angles, Linear pair, Vertically opposite angles. • If a ray stands on a line, then the adjacent angles so formed are […]

Complementary angles, Supplementary angles, Adjacent angles, Linear pair, Vertically opposite angles. • If a ray stands on a line, then the adjacent angles so formed are […]

Sides, Angles and diagonals of a quadrilateral; Different types of quadrilaterals: Trapezium, parallelogram, rectangle, rhombus and square. • Sum of the angles of a quadrilateral is […]

Triangles and their parts, Congruence of triangles, Congruence and correspondence of vertices, Criteria for Congruence of triangles: (i) SAS (ii) ASA (iii) SSS (iv) RHS AAS criterion […]

Points, Line, Plane or surface, Axiom, Postulate and Theorem, The Elements, Shapes of altars or vedis in ancient India, Equivalent versions of Euclid’s fifth Postulate, Consistency of […]

An equation is a statement in which one expression equals to another expression. An equation of the form ax + by + c = 0, where […]

Cartesian system Coordinate axes Origin Quadrants Abscissa Ordinate oordinates of a point Ordered pair Plotting of points in the cartesian plane: In the Cartesian plane, […]

Degree of a polynomial Coefficients Monomials, Binomials etc. Constant, Linear, Quadratic Polynomials etc. Value of a polynomial for a given value of the variable Zeroes […]

Rational numbers Irrational numbers Locating irrational numbers on the number line Real numbers and their decimal expansions Representing real numbers on the number line Operations […]

Let a line ‘l’ and a point P not lying on it be given. By using properties of a transversal and parallel lines, a line which […]

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