ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / IGeometryEngine Interface / Union Method

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    Union Method (IGeometryEngine)
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    Overload List
    OverloadDescription
    Constructs the set-theoretic union of the input geometries.  
    Constructs the set-theoretic union of the input geometries.  
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also