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Orienting Yourself : The Use of Coordinates

CBSE · Class 9 · Mathematics

Quick revision notes for Orienting Yourself : The Use of Coordinates — CBSE Class 9 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

89 questions80 flashcards5 concepts

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Key Topics to Revise

1

4. Distance between two points in the plane

  • The Baudhāyana–Pythagoras Theorem helps find the distance between any two points in the xy-plane.
  • Triangle ADM is used as a worked example in the chapter.
  • For A = (3,4) and D = (7,1), the x-distance is 7 - 3 = 4 and the y-distance is 4 - 1 = 3.
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5. Historical development of coordinate ideas

  • Baudhāyana used East–West and North–South lines for geometric constructions and developed the Baudhāyana–Pythagoras Theorem.
  • Ujjayinī was described as the point marking the central longitude meridian from which all other locations were measured.
  • Ptolemy described latitudes and longitudes of thousands of locations, including Ozine (Ujjayinī).

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Full Notes

Key Concepts

A coordinate system is a structuredThe plane in which the axesThe point of intersection ofIn coordinates (xA point on the x

Frequently Asked Questions

What are the important topics in Orienting Yourself : The Use of Coordinates for CBSE Class 9 Mathematics?
Orienting Yourself : The Use of Coordinates covers several key topics that are frequently asked in CBSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Orienting Yourself : The Use of Coordinates — CBSE Class 9 Mathematics?
Understand the core concepts first, then work through the 89 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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