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AutoCAD and Its Applications—Basics
Copyright Goodheart-Willcox Co., Inc.
Use the
DElta
option to specify a positive or negative change in length, measured
from the endpoint of the selected object. The change in length occurs at the end closest
to the selection point. See Figure 11-28. Use the
Angle
option of the
DElta
option to
change the included angle of an arc according to a specifi ed angle. See Figure 11-29.
Select the
Percent
option to change the length of an object or the angle of an arc by
a specifi ed percentage. The original length is 100 percent. Specify a percentage more
than 100 to increase the length or less than 100 to decrease the length. See Figure 11-30.
The
Total
option allows you to set the total length or angle of the object after the
LENGTHEN
operation. See Figure 11-31. The
DYnamic
option lets you drag the endpoint
of the object to the desired length or angle using the crosshairs. See Figure 11-32. It is
helpful to use dynamic input with polar tracking or
Ortho
mode or to have the grid
and snap set to usable increments when using the
DYnamic
option.
Figure 11-28.
Using the
DElta
option of the
LENGTHEN
command with
values of
.75
and –.75.
Select the object
closest to the end to
lengthen or shorten
Original Object
Lengthened by a Value of
.75
Shortened by a Value of
–.75
.75
–.75
Figure 11-29.
Using the
Angle
option of the
DElta
option to increase
or decrease the
included angle of an
arc by 45°.
Original Arc
90° Included Angle
Select the object
closest to the end
to lengthen or shorten
Arc Length Changed
by 45°
Arc Length Changed
by –45°
45°
–45°
Figure 11-30.
Examples of
changing the length
of a line using the
Percent
option of
the
LENGTHEN
command.
Select the object closest
to the end to lengthen
or shorten
Original Object (100% Long)
Lengthened to 125%
125%
75%
Shortened to 75%