About-Entering-2D-Polar-Coordinates

About Entering 2D Polar Coordinates

About Entering 2D Polar Coordinates

You can use absolute or relative polar coordinates (distance and angle) to locate
points when creating objects.

To use polar coordinates to specify a point, enter a distance and an angle separated
by an angle bracket (<).

By default, angles increase in the counterclockwise direction and decrease in the
clockwise direction. To specify a clockwise direction, enter a negative value for
the angle. For example, entering 1<315 locates the same point as entering 1<-45. You can change the angle conventions for the current drawing with the UNITS command.

Absolute Polar Coordinates

Absolute polar coordinates are measured from the UCS origin (0,0), which is the intersection
of the X and Y axes. Use absolute polar coordinates when you know the precise distance and angle
coordinates of the point.

With dynamic input, you can specify absolute coordinates with the # prefix. If you enter coordinates on the command line instead of in the tooltip, the
# prefix is not used. For example, entering #3<45 specifies a point 3 units from the origin at an angle of 45 degrees from the X axis.

The following example shows two lines drawn with absolute polar coordinates using
the default angle direction setting. Enter the following in the tooltip:

Command: line

From point: #0,0

To point: #4<120

To point: #5<30

Relative Polar Coordinates

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.

To specify relative coordinates, precede the coordinate values with an @ sign. For
example, entering @1<45 specifies a point at a distance of 1 unit from the last point specified at an angle
of 45 degrees from the X axis.

The following example shows two lines drawn with relative polar coordinates. In each
illustration, the line begins at the location labeled as the previous point.

Command: line

From point: @3<45

To point: @5<285

Learning AutoCad

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