Share Email Facebook Twitter LinkedIn MidpointConstraint3DProxy.Line Property Parent Object: MidpointConstraint3DProxy Description Property that returns the sketch line being constrained. Syntax MidpointConstraint3DProxy.Line() As SketchLine3D Property Value This is a read only property whose value is a SketchLine3D. Version Introduced in version 2009 © Copyright 2025 Autodesk, Inc. Comment on this page.