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  PLine: Draws a polyline, which is a series of straight- or curved-line segments (or both) connected as a single object. I’m cheating slightly here because I cover curvy components in ssss1, but I don’t want you to have to read about one command in two different places.

  RECtang: Provides a convenient way to draw rectangles in a variety of ways as four right-angle polyline segments. AutoCAD has no actual rectangle object.

  POLygon: Gives you a convenient way to draw a polyline of many sides in the shape of a regular polygon (a closed shape with all sides and all angles equal).

The following additional straight-line drawing commands, also available in AutoCAD LT, are found in the drop-down list below the Draw panel:

  XLine: Draws a line (known as an ex-line or a construction line) that passes through a point at a specified angle and extends to infinity in both directions.

  RAY: Draws a line (known as a ray) that starts at a point and extends to infinity at a specified angle away from the start point.