# Basics of Coordinate Geometry

**Coordinate Geometry is a very interesting chapter in mathematics. playing with coordinates and graphs, am I right?**

**This is an introduction or you can say basics of the coordinate geometry. I hope you will be enjoying learning coordinate geometry chapter.**

**Here we learn the concept of coordinate geometry. Basically the X-axis, Y-axis, Four Quadrants, concept of positive **

**and negative axis etc.**

**We learnt ;-**

**1. To locate the position of an object or a point in a plane, we require two perpendicular lines.**

**2. When Perpendicular lines intersect each other there is formation of four quadrants namely first quadrant (1st) , **

** Second quadrant ( 2nd), Third quadrant (3rd) & Fourth Quadrant ( 4th).**

**3. Intersecting point is called origin.**

**4. Horizontal line is called X-axis while vertical line is called y-axis.**

**5. X-axis is positive right side of the origin while negative in left side of the origin.**

**6. Y – axis is positive above the origin and negative below the origin.**

**7. Particular location is defined by the length traveled in X-axis called X-coordinate or abscissa followed by the length traveled in Y-axis c called y-coordinate or ordinate . Using comma( , ) we separate X & Y Coordinates.**

**8. IF the abscissa of a point is x and the ordinate is y then (x,y) are called coordinates of the point.**

**9. The coordinates of a point on the x-axis are of the form (x,o) & and that of the point on the y-axis are (0,y)**

**10. The coordinates of the origin is (0,0).**

**11.. The coordinates of the first quadrant are of the form ( + , + )**

** The coordinates of the second quadrant are of the form ( – , + )**

** The coordinates of the third quadrant are of the form ( – , – ).**

** The coordinates of the fourth quadrant are of the form ( – , + ).**

**12. If x is not equal to y then, (x,y) is not equal to (y , x ) and (x,y) equal to (y,x) if x=y.**

**I hope you understand how to graph the points also in a coordinate plane or Cartesian Plane.**

**next Video or lesson we will learn to graph the points with a lot of examples in different ways. **

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