# About Entering 3D Cartesian Coordinates

3D Cartesian coordinates specify a precise location by using three coordinate values:
X, Y, and Z.

Entering 3D Cartesian coordinate values (X,Y,Z) is similar to entering 2D coordinate values (X,Y). In addition to specifying X and Y values, you also specify a Z value using the following format:

X,Y,Z

In the illustration below, the coordinates 3,2,5 specifies a point 3 units along the
positive X axis, 2 units along the positive Y axis, and 5 units along the positive Z axis.

## Use Default Z Values

The initial default value of Z in any drawing is 0. When you specify a point, the Z value is retained as the default. For example, if you enter the following coordinates
for a line

From point: 0,0,5

To point: 3,4

both endpoints of the line will have a Z value of 5.

## Absolute and Relative Cartesian Coordinates

As with 2D coordinates, you can enter absolute coordinate values, which are based
on the origin, or you can enter relative coordinate values, which are based on the
last point entered.

To enter relative coordinates, use the @ sign as a prefix. For example, @1,0,0 specifies
a point 1 unit in the positive X direction from the previous point. To enter absolute coordinates, no prefix is necessary.

NOTE:When you enter coordinates in the cursor tooltip with dynamic input, you specify absolute
coordinates with the # prefix.

Cartesian coordinates specify a precise location by using three coordinate values: X, Y, and Z. Entering 3D Cartesian coordinate values (X,Y,Z) is similar to  …Entering 3D Cartesian coordinate values (X,Y,Z) is similar to entering 2D coordinate values (X,Y). In addition to specifying X and Y values, you also specify a Z …To Enter 3D Cartesian Coordinates Relative to the WCS … Entering @*2,0,0 specifies a point two units in the X direction of the last point entered relative to the  …coordinates with an asterisk (*). Entering @*2,0,0 specifies a point two units in the X direction of the last point entered relative to the WCS. Entering …Cartesian coordinates to specify a point, enter an X value and a Y value … Applies to AutoCAD 2016, AutoCAD Architecture 2016, AutoCAD Civil 3D …Entering 3D Cartesian coordinate values (X,Y,Z) is similar to  …Cartesian coordinate system but I'd also like to have a.input is turned on, you can enter the coordinate values in a tooltip … Applies to AutoCAD 2016, AutoCAD Architecture 2016, AutoCAD Civil 3D …About Entering Data Into the Coordinate Geometry Editor. In-Product View Help. Applies to AutoCAD Civil 3D 2016 Applies to AutoCAD Civil 3D 2016. Share.Cartesian coordinate systems in the plane and in three-dimensional space.

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