Cartesian System
Chapter Name : Coordinate Geometry |
Sub Topic Code : 104_09_03_02_01 |
Topic Name : Cartesian System |
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Sub Topic Name : Cartesian System |
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Introduction
What is a Coordinate geometry?
Pre-Requisites:
Basic knowledge about coordinates and graphs
Activity:
Every place on the map can be uniquely specified by a pair of numbers or a coordinate.
Real Life Question:
How are the surface targets for missiles found?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Coordinate Geometry Abscissa Ordinate | Related to locating a particular point in space The value on the X-axis perpendicular to the point. The value on the Y-axis perpendicular to the point. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| World map | Name a place and ask the student to indicate the coordinates of the place using the latitude as the X-axis and longitude as the Y-axis |
Real life uses :
Maps, global positioning systems, navigation systems, travel compass, target systems
Practical examples around us
| Examples | Explainations |
|---|---|
| Maps GPS | The maps use latitudes and longitudes as the coordinates to give the location of a place. The GPS system also uses latitudes and longitudes as the coordinates to give the location of the place. They also use the height factor to give the height of place from mean sea level. |
What you learn in Theory:
Cartesian system is used in coordinate geometry to locate points. A Cartesian plane is divided into four parts by the axes. The center is called the origin. The value of coordinates differ in each part.
What you learn in Practice:
To define the location of a place on a world map, we need to mark the distance of the place from the Y-axis called the X-coordinate and the distance of the place from X-axis called the Y-coordinate. Here X-coordinate is the longitude and Y-coordinate is the latitude.