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AutoCAD 2025 for Mac Developer and ObjectARX
    • Customization Guide
    • DXF Reference
    • AutoLISP and DCL
    • ObjectARX
      • ObjectARX: Developer's Guide
        • ObjectARX Introductory Concepts
        • Basic Interaction with AutoCAD
        • Custom Objects
        • Advanced Topics
        • ObjectARX Graphics, Geometry, and Boundary Representation Libraries
          • The Graphics Interface Library
          • Visualization
          • Using the Geometry Library
            • Overview of the AcGe Library
            • Using Basic Geometry Types
            • Using the Line and Plane Classes
            • Parametric Geometry
            • Special Evaluation Classes
            • Persistent AcGe Entities
      • ObjectARX: Reference Guide
      • ObjectARX: Release Notes
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    Using the Geometry Library

    This section discusses the main uses of the AcGe library, which provides a number of classes for representing 2D and 3D geometry. This library is intended for use by any Autodesk application and is frequently used by the AcDb and AcGi libraries in ObjectARX ® .

    Topics in this section
    • Overview of the AcGe Library
    • Using Basic Geometry Types
    • Using the Line and Plane Classes
    • Parametric Geometry
    • Special Evaluation Classes
    • Persistent AcGe Entities

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