This document discusses coordinate geometry and the uses of coordinates in daily life. It introduces Rene Descartes, the French mathematician who developed coordinate geometry. It then lists some uses of coordinates in engineering, architecture, arts, technology, maps, street directories, shopping centers, games, and plotting points in two dimensions with x and y axes. Examples of plotting points include (2,2), (2,1), and (1,2).

1. Coordinate Geometry

3. In Secondary 1… Number line 0 1 2 3 4 -1 -2 -3 -4 Reference point

4. Coordinates System

5. Today’s Menu Soup 2) Uses of coordinates in daily life

7. Use of coordinates in Daily Life

8. Use of coordinates in Daily Life

10. Today’s Menu 3) Read and plot coordinates in two dimensions (x,y)

11. Read & Plot coordinates 1 2 3 4 1 2 3 y x (2, 2) 0 (2, 1) (1, 2) Palembang Lake Toba