The SVG <circle> element is used to draw circle. The center point and radius are given.
<circle cx="x-axis co-ordinate" cy="y-axis co-ordinate" r="length" > </circle>
- cx: x-axis co-ordinate of the center.
- cy: y-axis co-ordinate of the center
- r: Radius of the circle.
Example: Change the opecity