Revision Notes For CBSE Class 9 Math Chapter -3 Coordinate Geometry

A coordinate geometry can be simply defined as a branch of geometry, where the position of the points on the plane is defined with the help of an ordered pair of numbers known as coordinates.

In the coordinate system, a coordinate graph contains a rectangular grid with two coordinate lines called as axes. The horizontal position is represented by X -coordinate and its vertical position is represented by Y- coordinate. They are typically written as an ordered pair (X, Y).

Listed below are some applications or uses of the coordinate geometry.

Coordinate Geometry is mainly used for:

  • Calculating the distance between the two given points.
  • To describe the equations of different geometric figures.
  • Finding the equation, midpoint, or slope of a line segment.
  • For calculating the area and the perimeter of a given polygon.
  • To conclude the given set of lines are parallel or perpendicular.

Get CBSE Class 9 Maths Chapter 3 Note 

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Frequently asked Questions on CBSE Class 9 Maths Notes Chapter 3: Coordinate Geometry

What are ‘Geometric figures’?

Geometric shapes are the figures which demonstrate the shape of the objects we see in our everyday life.

What are the uses of ‘Parallel lines’?

The parallel lines help us understand where the objects and sides of different shapes are going.

What is an ‘Ordered pair’?

An ordered pair is a composition of the x coordinate (abscissa) and the y coordinate (ordinate), having two values written in a fixed order within parentheses.

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