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Drawing a circle in AutoCAD is as easy as drawing a line. Circles just require a little bit more information. In this lesson, we're going to learn how to create circles. Before we get started, take a look at my Status Bar. Notice that all of these toggles are turned off, with the exception of grid. If you're going to work along with me, make sure that your mode settings match mine. Now, let's talk about what AutoCAD needs to create a circle. First of all, AutoCAD needs the location of the center point, and then it will need the circle's radius or diameter. The Radius is the distance from the center point to the edge, and the Diameter is the distance from one edge to the other that passes through the center point.
It's essentially the overall width of the circle. Let's pan this drawing over to create some room, and we'll create our first circle. To do that, I'll move up to the Draw panel, and I launch the Circle command. I'll pick a point on screen to define my center point. As I move my cursor, I get the same rubber band effect we see when creating a line. In fact, just like when we used the Line command, I can free-pick a point on screen to finish this circle. Now, this circle is nice, but it doesn't have much value because it wasn't created using any dimensions.
Let's create another circle, and this time we'll enter some real measurements. I'll launch the command again. I'll pick my center point on screen, and take a look at the command line. Notice that AutoCAD is expecting a radius. Let's say that I need to create a circle with a radius of 3. I'll type 3 and hit Enter. I'm going to launch the Circle command again. I'll pick another center point location over here, and let's look at the Commend line one more time. Notice that AutoCAD remembers the size of the last circle that I created. That number is now the default value for the Circle command.
So, if I wanted to create another circle of the same size, I can hit Enter to accept the default value. Let's create another circle, and this time we'll specify a diameter. I'll launch the command. We'll pick a point on screen. If we look at the command line, we can see the Circle command has a suboption of Diameter. I'm going to right-click and select Diameter, and then I'm going to enter a measurement of 8.25, and I'll Enter. That's pretty much it. There is no rocket science to creating circles in AutoCAD.
Now, let's talk for a minute about the Circle icon. Notice there is a fly-out right next to it. If I click this, it opens up a menu showing me that there are six different ways to create a circle. I show you this because there is only one circle command, this one, Center, Radius. this is the default circle method. All of the other choices that you see in this menu are merely shortcuts to the suboptions within the default command. For instance, I'm going to select the Center, Diameter method. I'll pick my center point on screen and take a look at the command line.
AutoCAD has entered the Diameter suboption for me. To finish this circle, I can simply type my diameter. I'm going to type 2, and I'll hit Enter. So, if you like using the shortcut icons, feel free to use those. Just remember that whichever shortcut you use last, that will become the default the next time you click this icon. Knowing what we know now, let's pan the drawing over. We'll zoom out a little bit. Let's try and recreate these existing circles. We'll start with this one. This circle has a radius of 3.25.
I'm going to click the fly-out and go back to the default circle method, Center, Radius. I'll pick my center point and I'll type 3.25 and hit Enter. Let's do the next circle, and I'll give you a shortcut. If you hit the Spacebar, you can re-launch the previous command. As you can see, I have re-launched Circle. So I'll pick a point on screen, I'll enter my radius of 5.62, and I'll hit Enter. Finally, we'll do this last circle. Take a look at this symbol right here. This is a Diameter symbol. So we can see this circle, obviously, it has a diameter of 8.
I'm going to hit my Spacebar to go right back into the Circle command. I'll pick the center point on screen, and then I'll right-click to access the Diameter suboption. I'll type 8 and hit Enter, and that's it. At this point in our training, we can create any circle that we wish, so long as we know the circle's radius or diameter.
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