Cartesian Coordinates

The name Cartesian, camne from a person called ‘Rene Descartes’ who had a famous quote of ‘I think, therefore i am’.
He first developed the cartesian coordinate system in 1637, This was an effort to merge algrebra euclidean geometry. The cartesian coordinate system has played a huge part in the role in the development of analytic geometry. A cartesian coordinate system allows you to pinpoint where we are on a map.

Example of a cartesian coordinate graph

X axis = horizontal and Y axis = vertical. The X axis always comes first followed by the Y axis(along the corridoor, up the stairs)
O is the origin and origin is the centre which means 0, 0, 0 on the coordinates. When you count the z axis that then goes last so it becomes X  first, then Y second and then finally Z.
The quadrants are counted in a counter clockwise order going from positive (X, Y) to negative (-X, -Y) – examples given negative= (-6, -2) positive= (7, 8) or mixed = (6, -7)
The z axis(depth) makes things 3D so adding that extra axis in makes it a bit more complicated.