Shapes are projected onto spatial models using vector objects—which are collections of points, lines, and polygons (closed shapes). Both the geometry and geography data types support the same Well-Known Text (WKT) markup language, which is a convention that expresses the vector objects that you define using a syntax governed by the OGC.
Table 9-1 shows some examples of WKT strings.
Table 9-1. examples of WKT Strings
A single point at xy-coordinates 6, 10
A single point on the earth (longitude/latitude coordinates)
LINESTRING(3 4,10 50,20 25)
A two-part line, drawn between three points specified as xy-coordinates
-75.17031 39.95601, -75.16786 39.95778, ...