| GeometryType_None | Indicates no specific type; used for "unknown", "don't care" or an incompletely constructed Geometry object. |
| GeometryType_Point | Point type |
| GeometryType_LineString | LineString type |
| GeometryType_Polygon | Polygon type |
| GeometryType_MultiPoint | MultiPoint type |
| GeometryType_MultiLineString | MultiLineString type |
| GeometryType_MultiPolygon | MultiPolygon type |
| GeometryType_MultiGeometry | MultiGeometry type |
| GeometryType_CurveString | CurveString type |
| GeometryType_CurvePolygon | CurvePolygon type |
| GeometryType_MultiCurveString | MultiCurveString type |
| GeometryType_MultiCurvePolygon | MultiCurvePolygon type |