Lengthen

Select entity to list length

Select a valid entity, and then the program reports the current length of an open entity in the current units,such as

Current length: 7'-11 7/8" 

DYnamic

Changes the length interactively; prompts you:

Select entity to change or [edit Mode] - (select an entity; the prompt that appears next depends on the entity you selected):

• Line: New end point for line - drag the line longer or shorter
• Arc: New start point - drag the arc longer or shorter
• Polyline: New end point - drag the segment longer or shorter

edit Mode option returns to original prompt to switch lengthening modes.)

Increment

Changes the length or angle by a specified amount; prompts you:

Enter length to increment or [Angle] <0"> - (specify a positive number to lengthen the entity, or a negative number to shorten it, or else enter A):

• Select entity to change or [edit Mode] - (select the entity to lengthen.)
• Enter angle increment <0> - (specify the angle by which to change the entity (applies to arcs only).)

Percent

Changes the length of entities by a percentage; prompts you:

Enter percent length <0.0000> - (enter a number to lengthen or shortens the entity to a percentage of the current length.)

For example, enter 25 (for 25%), and a 1"-long line is shorted to 0.25". Enter 150%, and the 1" line becomes 1.5".

Total

Changes the length to the amount specified; prompts you:

Angle/<Enter total length (0.0000)> - (enter an option):

• Enter total length - specifies the size to which to lengthen or shorten the entity; for example, enter 2 and a 1"-long line is lengthened to 2".
• Enter angle increment - specifies the angle to which to size the arc;  for example, enter 45 and a 180-degree arc is shortened to 45 degrees