To Mirror a Mesh Element or a Shape
1. Create or import a shape.
2. Do one of the following:
◦ Select a face or boundary edge of the control mesh.
◦ Select the shape from the Freestyle Tree or in the graphics window.
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If you select a mix of shapes and elements, such as faces or edges of other shapes, only the shapes are mirrored and other elements are ignored.
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3. Click > 
Mirror. You are prompted to select a reference datum plane.
Mirror. You are prompted to select a reference datum plane.4. Select a datum plane to mirror the mesh elements. The geometry is mirrored about the selected datum plane.
5. Perform the following operations on the mirrored mesh elements:
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Connect Mirror—Connects the selected face or edge to its mirrored face or edge. Select a face or edge and click Connect Mirror.
Connect Mirror—Connects the selected face or edge to its mirrored face or edge. Select a face or edge and click Connect Mirror.◦ 
Join Mirror—Joins the selected face or edge to its mirrored face or edge. Select a face or edge and click > Join Mirror.
Join Mirror—Joins the selected face or edge to its mirrored face or edge. Select a face or edge and click > Join Mirror.◦ 
Delete Mirror—Deletes the mirrored control mesh.
Delete Mirror—Deletes the mirrored control mesh.◦ 
Change Plane—Projects the edges or vertices lying on the previous mirror plane onto the new plane. Click > Change Plane and select a new mirror plane.
Change Plane—Projects the edges or vertices lying on the previous mirror plane onto the new plane. Click > Change Plane and select a new mirror plane.| | When you make topological changes to a dependent or an independent mirrored control mesh, the following behavior is exhibited: • For an independent mirrored mesh, all newly created or altered elements will become independent. • For a dependent mirrored mesh, the operation fails if the dependent geometry is altered as a result of the topological change. |
To Activate or Deactivate the Dependent Mode
Click 
Dependent to activate or deactivate the dependent mode. This mode is active by default.
Dependent to activate or deactivate the dependent mode. This mode is active by default.| | The Dependent command is available only when you create a mirrored geometry. When you deactivate the dependent mode, the control mesh for the mirrored geometry is displayed. You can modify this mesh if required. |
To Break the Connection between the Shapes
Select the original shape and click Break Dependency to permanently break the connection between the original shape and the mirrored shape. This converts the mirrored shape to a regular shape.