Start, End, Radius

The next arc tool that I will tell you about is Start, End, Radius. For this arc tool, you need to specify the start point, end point, and radius value. The direction of the arc will be determined by the order in which you select the start and end points.

To make this arc, I will select the option from the Arc drop-down menu of the Draw panel and click on the B point, and then on the A point. Now, the command line will prompt you to specify the radius of the arc. Enter the radius value in the command line and press Enter. The final arc will look like this:

The diameter of the arc, in this case, should always be greater than the length of the AC line, otherwise it will not be possible to construct the arc. For our example, I have used a diameter of 16 units (or a radius of 8 units) and the length of the AC line is 14.

In this case, you too can change the order of the start and end points to reverse the direction of the arc, or you can press and hold the Ctrl key while making the arc to reverse the direction of the arc.