# Intersects

The **Intersects** function determines if one geography intersects another geography.

You can use the **Intersects** function on Snowflake and BigQuery connections.

**Intersects** is one of Sigma's Geography functions.

## Syntax

Intersects(geography1, geography2)

The function arguments are:

- geography1
- Required
- The first geography that many be intersecting with the next geography
- geography2
- Required
- The second geography that many be intersecting with the previous geography

## Examples

Intersects(

Geography("POLYGON((0 0, 2 0, 2 2, 0 2, 0 0))"),

Geography("POLYGON((1 1, 3 1, 3 3, 1 3, 1 1))"))

The function returns `True`

.

Intersects([Brooklyn], [Queens])

If we define the Brooklyn and Queens boroughs as a polygons (see Geography functions overview for coordinates), then the Intersects function returns `True`

because they share a waterway; see the following illustration.