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# effectiveGeometry

The current values for the window scene’s geometry in system space.

```
var effectiveGeometry: UIWindowScene.Geometry { get }
```

## Discussion

This property is key-value observing (KVO) compliant. Observing [`effectiveGeometry`](/documentation/UIKit/UIWindowScene/effectiveGeometry) is the recommended way to receive notifications of changes to the window scene’s geometry. These changes can occur because of user interaction or as a result of the system resolving a geometry request.

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