Polyline Tool in AutoCAD

A polyline is a connected sequence of line segments created as a single object. You can create straight line segments, arc segments, or a combination of the two.

It works same as LINE TOOL.

Some reasons you may choose to use polylines include the following:

• Vertices remain joined even after grip editing
• Absolute line width (as an alternative to relative line weight) that can be constant or tapered across a segment
• Move and copy a polyline as a unit
• Easily create rectangles and polygons as single objects
• Smart application of non-continuous line types across vertices
• Easy extrusion for 3D solids in AutoCAD

Draw polylines with straight or curved segments. Define the width for the polyline segments and taper the width across the segment. Draw polygons specifying the number of sides and size. 

Draw a Polyline with Straight Segments

1. Click Home tabDraw panelPolyline.  Find
2. Specify the first point of the polyline. 
3. Specify the endpoint of the first segment. 
4. Continue specifying segment endpoints as needed. 
5. Press Enter to end, or enter c to close the polyline. 

Note: To start a polyline at the endpoint of the last polyline drawn, start the command again and press Enter at the Specify Start Point prompt. 

Draw a Wide Polyline

1. Click Home tabDraw panelPolyline.  Find
2. Specify the first point of the polyline. 
3. Enter w (Width) 
4. Enter the starting width of the segment. 
5. Specify the ending width of the segment using one of the following methods: 
   • To create a segment of equal width, press Enter. 
   • To create a tapering or increasing segment, enter a different width. 
6. Specify the endpoint of the segment. 
7. Continue specifying segment endpoints as needed. 
8. Press Enter to end, or enter c to close the polyline. 

Draw a Polyline with Straight and Curved Segments

1. Click Home tabDraw panelPolyline.  Find
2. Specify the first point of the polyline. 
3. Specify the endpoint of the first segment. 
4. Switch to Arc mode by entering a (Arc) at the Command prompt. 
5. Return to Line mode by entering L (Line). 
6. Specify additional segments as needed. 
7. Press Enter to end, or enter c to close the polyline. 

Draw a Rectangle

1. Click Home tabDraw panelRectangle.  Find
2. Specify the first corner of the rectangle. 
3. Specify the diagonal corner of the rectangle. 

Draw a Polygon

1. Click Home tabDraw panelPolygon.  Find
2. Enter the number of sides. 
3. Specify the center of the polygon. 
4. Do one of the following: 
   • Enter i to specify a polygon inscribed within a circle. 
   • Enter c to specify a polygon circumscribed about a circle. 
5. Enter the radius length. 

Draw a Polygon by Specifying One Edge

1. Click Home tabDraw panelPolygon.  Find
2. Enter the number of sides. 
3. Enter e (Edge). 
4. Specify the start point for one polygon segment. 
5. Specify the endpoint of the polygon segment. 

Draw a Boundary Polyline 

1. Click Home tabDraw panelBoundary.  Find
2. In the Boundary Creation dialog box, Object Type list, select Polyline. 
3. Click Pick Points.  Specify points within each area to form a boundary polyline for each. 
   Note: Each area must be enclosed. 
4. Press Enter to create the boundary polylines and end the command. 
   Note: The boundary polyline overlaps the objects used to create it.