Method that creates a new sketch arc that passes through the three input points. All the points must lie on the same plane.
| Name | Type | Description |
| StartPoint | Object | Input object that defines the start point. This can be either a SketchPoint3D or Point object. In the case where a SketchPoint3D object is input, that start point of the arc will be attached to the sketch point. |
| MidPoint | Object | Input Point object that defines a point along the arc. |
| EndPoint | Object | Input object that defines the end point. This can be either a SketchPoint3D or Point object. In the case where a SketchPoint3D object is input, that end point of the arc will be attached to the sketch point. |