Adds readWKT docs.

docs/en/sql-reference/functions/geo/polygon.md

@@ -53,6 +53,62 @@ String starting with `POLYGON`
 
 Polygon
 
+## readWKTPoint
+
+The `readWKTPoint` function in ClickHouse parses a Well-Known Text (WKT) representation of a Point geometry and returns a point in the internal ClickHouse format.
+
+### Syntax
+
+```sql
+readWKTPoint(wkt_string)
+```
+
+### Arguments
+
+- `wkt_string`: The input WKT string representing a Point geometry.
+
+### Returned value
+
+The function returns a ClickHouse internal representation of the Point geometry.
+
+### Example
+
+```sql
+SELECT readWKTPoint('POINT (1.2 3.4)');
+```
+
+```response
+(1.2,3.4)
+```
+
+## readWKTRing
+
+Parses a Well-Known Text (WKT) representation of a Polygon geometry and returns a ring (closed linestring) in the internal ClickHouse format.
+
+### Syntax
+
+```sql
+readWKTRing(wkt_string)
+```
+
+### Arguments
+
+- `wkt_string`: The input WKT string representing a Polygon geometry.
+
+### Returned value
+
+The function returns a ClickHouse internal representation of the ring (closed linestring) geometry.
+
+### Example
+
+```sql
+SELECT readWKTRing('LINESTRING (1 1, 2 2, 3 3, 1 1)');
+```
+
+```response
+[(1,1),(2,2),(3,3),(1,1)]
+```
+
 ## polygonsWithinSpherical
 
 Returns true or false depending on whether or not one polygon lies completely inside another polygon. Reference https://www.boost.org/doc/libs/1_62_0/libs/geometry/doc/html/geometry/reference/algorithms/within/within_2.html