Coordinate Systems on Autocad

1. Cartesian coordinate  (absolute)
Coordinates the use of the axis point of the X axis (horizontal) and Y axis (vertical)
The way of writing : X,Y

AUTOCAD commands to draw like the example above is as follows:

Command: line
Specify first point: 2.2
Specify next point or [Undo]: 5.2
Specify next point or [Undo]: 5.4
Specify next point or [Close / Undo]: 6.4
Specify next point or [Close / Undo]: 6.5
Specify next point or [Close / Undo]: 2,5
Specify next point or [Close / Undo]: c


2. Relative Coordinate
Coordinates using the relative distance from the end point is drawn. For the binding of the axis point previously used symbol @
The way of writing: @ X, Y

AUTOCAD commands to draw like the example above is as follows:

Command: line
Specify first point: 2.2 (Or click on the Drawing Area)
Specify next point or [Undo]: @ 3.0
Specify next point or [Undo]: @ 0.2
Specify next point or [Close / Undo]: @ 1.0
Specify next point or [Close / Undo]: @ 0.1
Specify next point or [Close / Undo]: @ -4.0
Specify next point or [Close / Undo]: c

3. Polar Coordinates
Coordinates indicating the distance to the endpoint direction drawn by a certain angle.
The way of writing: @ Distance<Angle

AUTOCAD commands to draw like the example above is as follows:

Command: line
Specify first point: 2.2 (Or click on the Drawing Area)

Specify next point or [Undo]: @ 3 <0
Specify next point or [Undo]: @ 2 <90
Specify next point or [Close / Undo]: @ 1 <0
Specify next point or [Close / Undo]: @ 1 <90
Specify next point or [Close / Undo]: @ 4 <90
Specify next point or [Close / Undo]: c