Co-ordinate Geometry

Co-ordinate Geometry

1. Plotting a point in a plane.

   • At first we have to draw co ordinate axis and then we have to select units.
     • Starting from origin we need to count units on x and y axis.
       • We have to mark the corresponding points on the graph.

2. Quadrants

   • Plane is divided into four parts
     • There are four quadrants:-
       • First quadrant:- (+,+) eg- 2,3
         • Second quadrant:-(-,+) eg- -2,3
           • Third quadrant:-(-,-) eg- -2,-3
             • Fourth quadrant:-(+,-) eg- 2,-3

3. Cartesian System

   • It means to describe the position of a point in a line .
   • Fixed point
     • Points where x and y axis intersect (0,0)

4. Two perpendicular lines

   • X-axis
     • Abscissa
   • Y-axis
     • Ordinate