| Name | Description |
| Copy | Creates a copy of this Circle2d object. The result is entirely independent and can be edited without affecting the original Circle2d object. |
| GetCircleData | Get the data defining this circle. |
| PutCircleData | Method that sets the data defining this circle. |
| Name | Description |
| Center | Use F1 key to display help topic. |
| Evaluator | Gets the Curve2dEvaluator for this circle. |
| Radius | Use F1 key to display help topic. |