## The Coordinate Plane

Summary
The essence of coordinate geometry lies in understanding the coordinate plane, its components, and how they interact to define the position of points within the plane.
• Coordinate geometry revolves around the Cartesian plane, named after Rene Descartes, which is formed by intersecting two number lines at right angles, known as the x-axis and y-axis.
• The origin marks the center of the plane, and every point on the plane can be uniquely identified by an ordered pair (x-coordinate, y-coordinate), demonstrating the plane's infinite capacity to denote position.
• Understanding the quadrants, which divide the plane into four regions, is crucial for determining the sign (positive or negative) of the coordinates based on their location relative to the x and y axes.
• The ability to locate a point given its coordinates, or to determine the coordinates of a given point, is an essential skill for the GRE exam.
• Practice problems within the content emphasize the practical application of these concepts, highlighting the importance of visualization and quadrant identification in solving coordinate geometry questions.
Chapters
00:03
Introduction to Coordinate Geometry
00:45
Understanding the Coordinate Plane
01:01