Rectangular Coordinate System

• Rectangular Coordinate System


  Also called as Cartesian Coordinate System
• Rene Descartes


  French mathematician known as "Father of Modern Mathematics"
• Parts of Cartesian Plane

  • x-axis/ Abscissa - horizontal line
  • y-axis/ Ordinate - vertical line
  • Origin (0,0) - intersection point of the two line
  • Quadrants - the four regions of plane
• Coordinates


  (x, y)
• Activity 3.1


  1. Plot the set of points

  2. Connect the points to create a Hero Logo
• Points to plot


  • (2,3)
  • (-2,3)
  • (2,1)
  • (-2, 1)
  • (2,-1)
  • (-2,-1)
  • (5,5)
  • (7,2)
  • (0, -5)
  • (-7,2)
  • (-5,5)
• Plotting points


  Write the Alphabet together with the Coordinates
• Example of plotting point


  • A (5,6)
• Get your Graphing Paper / Bond Paper