Developing Drawing Strategies: Part 1 - AutoCAD 2011 and AutoCAD LT 2011: No Experience Required - page 105

Editing a Polyline
Polylines are composed of segments, which may be straight or curved lines, and
vertices that terminate the segments. Each segment must have a vertex at each
end, but several segments can share a single vertex. The perimeter that you drew
follows the major length and width dimensions of the cabin but doesn't account
for the small pop-out on the south side of the structure. In this exercise, you will
add the pop-out, trim the original polyline, and then join the two polylines into a
single entity.
1. Click the Polyline button in the Draw panel on the Home tab of the
Ribbon to start the polyline command. Alternatively, you can enter
PL ↵ at the command line.
2. At the Specify start point: prompt, enter 16',8' ↵ ( 4850,2500↵ ).
With the Dynamic Input feature turned on, the comma not only des-
ignates the X and Y locations for the start point, but it also instructs
AutoCAD to switch the current input field from the X field to the Y field.
When Dynamic Input is turned off, the values that you type are
shown in the command window.
A rubber-banding line, similar to the one you saw when you used
the LINE command, is attached to the point you designated in step 2
and to the cursor.
3. Enter 0,-2' ↵ (0,-610 ↵ ) 6',0 ↵ ( 1830,0 ↵ ) 0,2' ↵↵ ( 0,610↵↵ ). Your
screen should look like Figure 4.9.
FiGuRE 4.9 The pop-out added to the cabin
4. Start the TRIM command.