AutoCAD 2008 User's
Guide > Create and Modify
Objects > Use Precision
Tools > Use Coordinates and
Coordinate Systems (UCS) > Enter 2D
Coordinates >

Enter Cartesian Coordinates

You can use absolute or relative Cartesian (rectangular) coordinates to locate points when creating objects.

*X* value and a *Y* value separated
by a comma *(X,Y)*. The *X*
value is the positive or negative distance, in units, along the
horizontal axis. The *Y* value is the positive
or negative distance, in units, along the vertical axis.

*X* and *Y* axes. Use absolute coordinates when you know the
precise *X* and *Y* values
of the point.

*#* prefix. If you enter coordinates on the command
line instead of in the tooltip, the *#*
prefix is not used. For example, entering *#3,4* specifies a point 3 units along the *X* axis and 4 units along the *Y*
axis from the UCS origin. For more information about Dynamic Input,
see
Use Dynamic Input.

*X* value
of -2, a *Y* value of 1, and an endpoint at
3,4. Enter the following in the tooltip:

Command: *line*

From point: *#-2,1*

To point: *#3,4*

The line is located as follows:

Relative coordinates are based on the last point entered. Use relative coordinates when you know the location of a point in relation to the previous point.

*@3,4* specifies a
point 3 units along the *X* axis and 4 units
along the *Y* axis from the last point
specified.

*X* direction and 0 units in the
*Y* direction. The second side is a line
starting at the endpoint of the first line and ending at a point 0
units in the *X* direction and 3 units in the
*Y* direction. The final line segment uses
relative coordinates to return to the starting point.

Command: *line*

From point: *#-2,1*

To point: *@5,0*

To point: *@0,3*

To point: *@-5,-3*