If you use the Rectangle command to draw rectangles by picking two corner points, it’s time to explore some of the other options in the command. To start the command, type Rec at the command prompt or select Rectangle from the Drawing toolbar. AutoCAD asks you to Specify first corner point. It also presents some other options: Chamfer, Elevation, Fillet, Thickness, Width.
The Fillet option, as you might guess, create a rectangle with filleted corners. If you select this option, AutoCAD will ask for a fillet radius.
Caption: Examples of filleted (top) and chamfered rectangles created with the Rectangle command.
Likewise, selecting the Chamfer option will produce a rectangle with chamfered corners. You are prompted to select the first chamfer distance for rectangles, then the second. The Fillet and Chamfer options can eliminate the need to launch a separate command to do the filleting or chamfering.
Width simply changes the rectangle’s lineweight. The Thickness and Elevation options may be useful if you’re doing 3D design.
Once you respond to the prompts to the option you select, AutoCAD will again prompt you to Specify the first corner point. Once you do that, you’ll be prompted to Specify the other corner point. This prompt also presents some additional options: Area/Dimensions/Rotation.
The Area option lets you specify an area, and AutoCAD will do the necessary calculations to produce a rectangle with that area. Once you enter A, or area, AutoCAD asks you to specify your desired area. The next prompt is Calculate rectangle dimensions based on [Length/Width]. Once you select either length or width, AutoCAD will prompt for a value for that.
The Dimensions option lets you enter the rectangle dimensions rather than the value for the second point.
The Rotation option lets you set a specific rotation for your rectangle. Rotation is from the first point you pick to define the rectangle.
You can use more than one of these options on a single rectangle. For example, you might give your rectangle a rotation of 30 degrees and an area of 40 units. You can also use them in conjunction with the options that accompany the Specify first corner prompt. For example, the sample drawing below is a filleted rectangle with a lineweight of 3 rotated 30 degrees.
Caption: You can combine the various rectangle options as you wish. The example above is a filleted rectangle with lineweight of 3 and 30-degree rotation.
Note that the values you set for various options will become the default values.