CBSE 10th syllabus(MATH)

UNIT II: ALGEBRA

1. POLYNOMIALS
   Definition of a polynomial in one variable, with examples and counter examples. Coefficients
   of a polynomial, terms of a polynomial and zero polynomial. Degree of a polynomial. Constant,
   linear, quadratic and cubic polynomials. Monomials, binomials, trinomials. Factors and
   multiples. Zeros of a polynomial. Motivate and State the Remainder Theorem with examples.
   Statement and proof of the Factor Theorem.
2. LINEAR EQUATIONS IN TWO VARIABLES

Recall of linear equations in one variable. Introduction to the equation in two variables.
Focus on linear equations of the type ax + by + c=0.Explain that a linear equation in two
variables has infinitely many solutions and justify their being written as ordered pairs of real
numbers, plotting them and showing that they lie on a line.

UNIT III: COORDINATE GEOMETRY

The Cartesian plane, coordinates of a point, names and terms associated with the
coordinate plane, notations

UNIT IV: GEOMETRY

1. INTRODUCTION TO EUCLID’S GEOMETRY
   History – Geometry in India and Euclid’s geometry. Euclid’s method of formalizing observed
   phenomenon into rigorous Mathematics with definitions, common/obvious notions,
   axioms/postulates and theorems. The five postulates of Euclid. Showing the relationship
   between axiom and theorem, for example:
   (Axiom) 1. Given two distinct points, there exists one and only one line through them.
   (Theorem) 2. (Prove) Two distinct lines cannot have more than one point in common.
2. LINES AND ANGLES
   • (Motivate) If a ray stands on a line, then the sum of the two adjacent angles so formed is 180O
     and the converse.
     • (Prove) If two lines intersect, vertically opposite angles are equal.
     • (Motivate) Lines which are parallel to a given line are parallel.
3. TRIANGLES
   • (Motivate) Two triangles are congruent if any two sides and the included angle of one triangle
     is equal to any two sides and the included angle of the other triangle (SAS Congruence).
   • (Prove) Two triangles are congruent if any two angles and the included side of one triangle is
     equal to any two angles and the included side of the other triangle (ASA Congruence).
   • (Motivate) Two triangles are congruent if the three sides of one triangle are equal to three sides of the other triangle (SSS Congruence).
   • (Motivate) Two right triangles are congruent if the hypotenuse and a side of one triangle are equal (respectively) to the hypotenuse and a side of the other triangle. (RHS Congruence)
   • (Prove) The angles opposite to equal sides of a triangle are equal.
   • (Motivate) The sides opposite to equal angles of a triangle are equal

4. QUADRILATERALS
   • (Prove) The diagonal divides a parallelogram into two congruent triangles.
   • (Motivate) In a parallelogram opposite sides are equal, and conversely.
   • (Motivate) In a parallelogram opposite angles are equal, and conversely.
   • (Motivate) A quadrilateral is a parallelogram if a pair of its opposite sides is parallel and equal.
   • (Motivate) In a parallelogram, the diagonals bisect each other and conversely.
   • (Motivate) In a triangle, the line segment joining the mid points of any two sides is parallel to
     the third side and in half of it and (motivate) its converse.
5. CIRCLES
   (Prove) Equal chords of a circle subtend equal angles at the center and (motivate) its
   converse.
   (Motivate) The perpendicular from the center of a circle to a chord bisects the chord and
   conversely, the line drawn through the center of a circle to bisect a chord is perpendicular to
   the chord.
   • (Motivate) Equal chords of a circle (or of congruent circles) are equidistant from the center
     (or their respective centers) and conversely.
     (Prove) The angle subtended by an arc at the center is double the angle subtended by it at any
     point on the remaining part of the circle.
     (Motivate) Angles in the same segment of a circle are equal.
     (Motivate) If a line segment joining two points subtends equal angle at two other points lying
     on the same side of the line containing the segment, the four points lie on a circle.
     (Motivate) The sum of either of the pair of the opposite angles of a cyclic quadrilateral is 180°
     and its converse

UNIT V: MENSURATION

1. AREAS
   Area of a triangle using Heron’s formula (without proof)
2. SURFACE AREAS AND VOLUMES
   Surface areas and volumes of spheres (including hemispheres) and right circular cones.

UNIT VI: STATISTICS
Bar graphs, histograms (with varying base lengths), and frequency polygons