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Center, radius, and diameter
The first option in the Circle flyout will let you make a circle with center and radius values. The following is the workflow for making a circle using a center and radius:
- Select the first option from the Circle flyout. The command line will now prompt you to specify the center of the circle:
Figure 2.24: The circle command in the command line
- Click on any point in the drawing area and this will be selected as the center of the circle.
- Now, the command line will prompt you to specify the radius of the circle. Type the radius value in the command line and press Enter to make the circle, or you can also move your cursor in the drawing area and click on a point to make your circle.
- The circle will be made with a specified radius and center point.
Let’s repeat the preceding example again to make a circle with a diameter value this time:
- Type C and press Enter to start the Circle command, or use the Circle tool from the Circle flyout.
- Click on a point to specify the radius of the circle and then the command line will prompt you to specify its radius:
Figure 2.25: The radius prompt in the circle command line
- Don’t add the radius value at this point. In the command line, you will also see that after or, Diameter is highlighted with D in uppercase. Using this option, you can convert the radius input of the command line to the diameter. So, instead of radius, type D and then press Enter.
- The command line will change again and this time it will prompt you to specify the diameter instead of the radius. You can also click on the highlighted Diameter option in the command line to select it instead of typing D and pressing the Enter key:
Figure 2.26: The diameter prompt in the circle command line
- Now, type the value of the diameter in the command line and press Enter and your circle will be rendered with the required diameter. In the Circle flyout, the second option, Center, Diameter, will also let you make a circle with a center and diameter.
So, these two methods are nearly identical, the only difference being the radius or diameter value that you need to make the circle. The methods shown in the next section are, however, completely different and you don't even need the radius or diameter value for them.