Use the Ellipse object to create circle or oval shapes. Position the cursor over your publication where you want the top left corner of your ellipse to begin. Hold down the left mouse button and drag the cursor to where you would like the opposite corner. When your ellipse reaches the desired size and shape, release the mouse button. 

Set the attributes for the outline and interior colors using the Style Panel.

You can draw perfect circles by enabling the Snap to Grid feature on the Options Menu.

Ellipse objects are created using <svg> HTML tag.