How do you create a circle in AutoCAD?

To create a circle in AutoCAD, the most efficient method is to use the "CIRCLE" command, where you are required to specify the center point and the radius of the circle. This command allows for accurate and precise creation of circles with specific dimensions, which is essential in technical drawings and designs.

Using the "CIRCLE" command, you can click on the desired location in your drawing to set the center of the circle and then either drag to visually indicate the radius or type in a numerical value for precise control. This direct and straightforward approach simplifies the process and ensures that the geometry meets your specifications.

For the other methods mentioned, while they are valid commands in AutoCAD, they are not used for creating circles. The "ELLIPSE" command creates an ellipse, which is not a circle as it has differing axis lengths. The "RECTANGLE" command is used for drawing rectangles, inherently defined by opposite corners, and does not relate to circular geometry. Lastly, the "POLYGON" command allows for the creation of polygons with multiple sides, but again does not serve to create a simple circle.

Therefore, the "CIRCLE" command stands out as the most appropriate choice for drawing circles in AutoCAD.