Circle and ellipse
You can use the <circle> tag to create a circle with the desired center and radius.
For ellipses, use the <ellipse> tag.
Circle
| 
 | x-coordinate of the center | 
| 
 | y-coordinate of the center | 
| 
 | Radius | 
<circle cx="50" cy="50" r="30" fill="#01b8aa" />
 
Ellipse
| 
 | x-coordinate of the center | 
| 
 | y-coordinate of the center | 
| 
 | Horizontal radius | 
| 
 | Vertical Radius | 
<ellipse cx="50" cy="50" rx="30" ry="40" fill="#01b8aa" />
