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To draw a polyline that includes curved segments, follow these steps:

1 Repeat Steps 1–4 in the preceding step list.

2 To add one or more arc segments, type A, and then press Enter to select the Arc option.The prompt changes to show options for drawing arc segments. Most of these options correspond to the many ways of drawing circular arcs in AutoCAD; see the section on arcs in ssss1. The command line shows:Specify endpoint of arc or [Angle CEnter/CLose Direction Halfwidth Line Radius Second pt Undo Width]:

3 Specify the endpoint of the arc by clicking a point or typing coordinates.AutoCAD draws the curved segment of the polyline. The prompts continue to show arc segment options.Specify endpoint of arc or [Angle CEnter/CLose Direction Halfwidth Line Radius Second pt Undo Width]:The options at this point are toSpecify additional points to draw more arc segments.Choose another arc-drawing method, such as CEnter or Second point.Return to drawing straight-line segments with the Line option.In this example, you draw straight-line segments. Perhaps the most useful of the alternative arc-drawing methods is Second pt. It gives you more control over the direction of the arc but at the cost of losing tangency of adjacent segments. (Sometimes, it’s best not to go off on a tangent, anyway.) If you want both ends of the arc segments to be tangent to the adjacent line segments, draw the polyline as straight-line segments and then use the Fillet command (described in ssss1) to add the arcs later.