AutoCAD 2008 User's
Guide > Create and Modify
Objects > Use Precision
Tools > Use Coordinates and
Coordinate Systems (UCS) > Enter 3D
Coordinates >

Enter Cylindrical Coordinates

3D cylindrical coordinates describe a precise
location by a distance from the UCS origin in the *XY* plane, an angle from the *X*
axis in the *XY* plane, and a *Z* value.

*XY* plane. Cylindrical
coordinates define points by a distance in the *XY* plane from the UCS origin, an angle from the
*X* axis in the *XY* plane,
and a *Z* value. You specify a point using
*absolute* cylindrical coordinates with the
following syntax:

*X**<[**angle from X axis**],**Z*

NoteFor the
following examples, it is assumed that dynamic input is turned off
or that the coordinates are entered on the command line. With
Dynamic Input, you specify absolute coordinates with the *#* prefix.

*X* axis in the *XY* plane, and 6
units along the *Z* axis.

*relative* cylindrical
coordinate values with the @ prefix. For example, @4<45,5
specifies a point 4 units in the *XY* plane
from the last point entered, at an angle of 45 degrees from the
positive *X* direction, and extending 5 units
in the positive *Z* direction.