Returns the smallest convex Polygon that contains all the points in the Geometry.
Function ConvexHull() As Geometry
Returns the minimum-area convex polygon containing this Geometry's points.
This obviously applies only to Geometrys which contain 3 or more points; the results for degenerate cases are specified as follows:
|Number of Points in argument Geometry||Geometry class of result|
|3 or more||Polygon|