CBSE · Class 9 · Mathematics · Chapter 1

Orienting Yourself: The Use of Coordinates

Explore how coordinates help us describe position, navigate the Cartesian plane, and calculate distances between points.

5 lessons 55 min
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Lessons in this chapter

  1. 1Orienting Yourself: The Use of CoordinatesThink of GPS coordinates as a universal address system designed specifically so aliens don't have to ask you for cross streets when they visit.
  2. 2Applying Coordinates: The Room LayoutLatitude tells you how close you are to the equator, while longitude exists primarily to remind you that Greenwich, England decided it was the center of time and space.
  3. 3The 2-D Cartesian Coordinate SystemAt last, x and y agree to meet—strictly at right angles.
  4. 4Distance Between Two Points in the 2-D PlaneBecause even points on a plane occasionally need to know how far apart they are.
  5. 5Chapter Summary and PracticePlot what you know and see whether your answers land in the right place.
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