| Class | Description | 
|---|---|
| Bounds | A Bounds is an Envelope with a Projection. | 
| CircularRing | A CircularRing is a closed CircularString. | 
| CircularString | A CircularString is a collection of connected circular arc segments. | 
| CompoundCurve | A CompoundCurve is a connected set of CircularStrings and LineStrings | 
| CompoundRing | A CompoundRing is a connected set of CircularStrings and LineStrings | 
| Geometry | The base class for other Geometries. | 
| GeometryCollection | A GeometryCollection is a heterogenerous collection of other Geometries. | 
| LineString | A LineString Geometry. | 
| LinearRing | A LinearRing Geometry is a LineString whose first and last coordinates are the same forming a closed ring. | 
| MultiLineString | A MultiLineString Geometry. | 
| MultiPoint | A MultiPoint Geometry. | 
| MultiPolygon | A MultiPolygon Geometry. | 
| Point | A Point Geometry. | 
| Polygon | A Polygon Geometry. | 
| PreparedGeometry | A PreparedGeometry makes repeated spatial operations more efficient. |