# Circle
<a name="API_Circle"></a>

Geometry defined as a circle. The circle defines the routing boundary area. Any waypoints outside the circle will result in a route matrix entry error.

You can specify a `Circle` directly in the request, or it will be auto-derived when `AutoCircle` is used. When `AutoCircle` is set in the request, the response routing boundary will return `Circle` derived from the `AutoCircle` settings.

## Contents
<a name="API_Circle_Contents"></a>

 ** Center **   <a name="location-Type-Circle-Center"></a>
Center of the Circle in World Geodetic System (WGS 84) format: [longitude, latitude].  
Example: `[-123.1174, 49.2847]` represents the position with longitude `-123.1174` and latitude `49.2847`.   
Type: Array of doubles  
Array Members: Fixed number of 2 items.  
Required: Yes

 ** Radius **   <a name="location-Type-Circle-Radius"></a>
Radius of the Circle.  
 **Unit**: `meters`   
Valid Range: Minimum value of 0. Maximum value of 200000.  
Type: Double  
Required: Yes

## See Also
<a name="API_Circle_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/geo-routes-2020-11-19/Circle) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/geo-routes-2020-11-19/Circle) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/geo-routes-2020-11-19/Circle)