# NCERT Class 9 Maths Chapter 3 pdf | Class 9 Coordinate Geometry pdf

NCERT Class 9 Maths Chapter 3 pdf: This NCERT Class 9 Coordinate Geometry pdf is the latest edition of the NCERT book which has been published by the National Council of Educational Research and Training (NCERT). This latest NCERT Book for Class 9 Maths explains all the concepts and theorems in an explanatory way which makes learning quite simple and effective.

###### Important points to be remember for Coordinate Geometry (Class 9th Maths Chapter 3)

I. In Cartesian system, there are two perpendicular straight lines XX’ (horizontal line) and YY’ (vertical line) which intersect at origin.
II. The x and y-coordinates of a point is the perpendicular distance from the Y-axis and X-axis measured along the X and Y-axes respectively.
III. The y-coordinate of any point X-axis is zero and x-coordinate of any point on Y-axis is zero.
IV. The axes divides the plane into four quadrants.
1. In 1st quadrants x > 0, y > 0 i.e (+, +)
2. In 2nd quadrants x < 0, y > 0 i.e (-, +)
3. In 3rd quadrants x < 0, y < 0 i.e (-, -) 4. In 4th quadrants x > 0, y < 0 i.e (+, -)