Ellipse Tool is just below the Type tool and beside the path selection tool.This
tool is a shape tool.With the help of Ellipse Tool, we can draw ellipse
shape of any size.We can also draw shape of a circle with the help of this
tool.We can also draw shape of a perfect circle with the help of this tool.
That means we can draw a circle with equal radius.
This is the Ellipse Tool.Go on to that tool and just click on it to select
it.
Select the Ellipse Tool and position the pointer inside the work area
and just click and drag.Now we can draw shape of a ellipse of any size.
If we want to draw shape of a perfect circle, then just click and hold
the shift key, and now click and drag the tool. Now we can see the shape
of a perfect circle.That means we can draw a circle with equal radius.