If you want to draw a circle, you can select the Circle by Center Point Command 
on the Draw toolbar. Then, you select a point to define the center of the circle. To place the
circle, you select a second point to define the distance of the circle radius from
the first point. You can use other commands on the Draw toolbar to place arcs, ellipses, and other types of circles.
To place circles, select Circle by Center Point and while holding the mouse button down, draw freehand. After you close the loop,
the circle appears.
You can also place a precise circle by selecting Circle by Center Point and then typing values into the ribbon. After you press ENTER, a circle appears around
the pointer. You can then place the defined circle by selecting the point you want
on the drawing sheet.