Class (9) Maths Sec 2024-25
Class (9) Maths Sec 2024-25
Class (9) Maths Sec 2024-25
COURSE STRUCTURE
CLASS –IX
Units Unit Name Marks
I NUMBER SYSTEMS 10
II ALGEBRA 20
III COORDINATE GEOMETRY 04
IV GEOMETRY 27
V MENSURATION 13
VI STATISTICS 06
Total 80
1
2. LINEAR EQUATIONS IN TWO VARIABLES (16) Periods
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.
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.
1. (Motivate) If a ray stands on a line, then the sum of the two adjacent angles so formed is 180O
and the converse.
2. (Prove) If two lines intersect, vertically opposite angles are equal.
1. (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).
2. (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).
2
3. (Motivate) Two triangles are congruent if the three sides of one triangle are equal to three
sides of the other triangle (SSS Congruence).
4. (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)
5. (Prove) The angles opposite to equal sides of a triangle are equal.
6. (Motivate) The sides opposite to equal angles of a triangle are equal.
1.(Prove) Equal chords of a circle subtend equal angles at the center and (motivate) its
converse.
2.(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.
3. (Motivate) Equal chords of a circle (or of congruent circles) are equidistant from the center
(or their respective centers) and conversely.
4.(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.
5.(Motivate) Angles in the same segment of a circle are equal.
6.(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.
7.(Motivate) The sum of either of the pair of the opposite angles of a cyclic quadrilateral is 180°
and its converse.
UNIT V: MENSURATION
3
UNIT VI: STATISTICS
STATISTICS (15) Periods
Bar graphs, histograms (with varying base lengths), and frequency polygons.
MATHEMATICS
QUESTION PAPER DESIGN
CLASS – IX (2024-25)
%
S. Total
Typology of Questions Weightage
No. Marks
(approx.)
Analysing :
Examine and break information into parts by identifying motives or
causes. Make inferences and find evidence to support
generalizations
Evaluating:
18 22
3 Present and defend opinions by making judgments about
information, validity of ideas, or quality of work based on a set of
criteria.
Creating:
Compile information together in a different way by combining
elements in a new pattern or proposing alternative solutions
Total 80 100