paleolimbot commented on code in PR #368:
URL: https://github.com/apache/sedona-db/pull/368#discussion_r2582937002


##########
docs/reference/sql.md:
##########
@@ -110,12 +111,38 @@ Return the Well-Known Text string representation of a 
geometry or geography.
 SELECT ST_AsText(ST_Point(1.0, 2.0))
 ```
 
+## ST_Azimuth
+
+Introduction: Returns Azimuth for two given points in radians null otherwise.
+
+Format: ST_Azimuth(pointA: Point, pointB: Point)
+
+Since: v0.2.
+
+```sql
+SELECT ST_Azimuth(ST_POINT(0.0, 25.0), ST_POINT(0.0, 0.0))
+```
+
+## ST_Boundary
+
+Returns the closure of the combinatorial boundary of this Geometry.
+
+Format: `ST_Boundary(geom: Geometry)`
+
+Since: v0.2.
+
+```sql
+SELECT ST_Boundary(ST_GeomFromWKT('POLYGON((1 1,0 0, -1 1, 1 1))'))
+```
+
 ## ST_Buffer
 
 #### Description
 
 Returns a geometry that represents all points whose distance from the input 
geometry is less than or equal to a specified distance.
 
+Since: v0.1.

Review Comment:
   Did you want to apply this?



##########
docs/reference/sql.md:
##########
@@ -676,7 +766,40 @@ Return true if geomA intersects geomB.
 #### SQL Example
 
 ```sql
-SELECT ST_Intersects(ST_Point(0.25 0.25), ST_GeomFromText('POLYGON ((0 0, 1 0, 
0 1, 0 0))')) AS val
+SELECT ST_Intersects(ST_Point(0.25, 0.25), ST_GeomFromText('POLYGON ((0 0, 1 
0, 0 1, 0 0))')) AS val;
+```
+
+## ST_IsClosed
+
+RETURNS true if the LINESTRING start and end point are the same.
+
+Format: `ST_IsClosed(geom: Geometry)`
+
+Since: v0.2.
+
+```sql
+SELECT ST_IsClosed(ST_GeomFromText('LINESTRING(0 0, 1 1, 1 0)'));
+```
+
+## ST_IsCollection
+
+Returns TRUE if the geometry type of the input is a geometry collection type. 
Collection types are the following:
+
+```sql

Review Comment:
   ````suggestion
   ```
   ````



##########
docs/reference/sql.md:
##########
@@ -516,6 +687,8 @@ SELECT 
ST_AsText(ST_GeomFromWKB(FROM_HEX('0101000000000000000000F03F000000000000
 
 Construct a Geometry from WKT. This function also has the alias 
**ST_GeomFromText**.

Review Comment:
   Did you want to apply this?



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