Notes Category: Class 9

Two figures are similar when they share the same shape but not necessarily the same size — one is simply …

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A graph turns an abstract equation into a visual shape, making it far easier to understand how one quantity changes …

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Geometric construction is the practice of drawing accurate figures using only a ruler and compass, without relying on a protractor …

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Information Handling is the branch of statistics concerned with collecting, organising, displaying, and summarising data so that it can be …

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Probability is the branch of mathematics that measures the chance of occurrence of a particular event, turning everyday ideas like …

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These free Mathematics Class 9 notes are prepared for students studying under the PCTB Board (Punjab Curriculum and Textbook Board), …

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Numbers developed over thousands of years, from the Sumerian base-60 system through Egyptian, Roman, and Indian numerals to the modern …

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Scientific notation writes very large or very small numbers compactly as a×10ⁿ, where 1≤a<10 and n is an integer — …

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A set is a well-defined collection of distinct objects, described in descriptive, tabular (roster), or set-builder form. Building on this …

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Factorization is the process of breaking a complex algebraic expression into a product of simpler expressions, and it is one …

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Linear equations and inequalities are among the most widely used tools in mathematics for modeling real-world relationships and making decisions …

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Trigonometry studies the relationships between the angles and sides of a triangle, most powerfully in the right-angled triangle, and it …

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