To mirror (reflect) geometry objects in a plane (3D), a line (2D), or a point (1D), on the Geometry toolbar Transforms () menu, select Mirror (). You can also right-click the Geometry node to add this node from the Transforms submenu. Then enter the properties of the mirror operation using the following sections:

Select the geometry objects that you want to reflect in the Graphics window. The objects appear in the Input objects list. If the geometry sequence includes user-defined selections above the Mirror node, choose Manual to select geometry objects, or choose one of the selection nodes from the list next to Input objects.

Click the Active button to toggle between turning ON and OFF the Input objects selections.

Select the Keep input objects check box to use the selected geometry objects for further geometry operations.

The coordinate system in which the plane coordinates and normal vector above are interpreted (in 3D geometries only). From the Work plane list, select xy-plane (the default, for a standard global Cartesian coordinate system) or select any work plane defined above this node in the geometry sequence. If you choose a work plane, the work plane and its coordinate system appears in the Graphics window, using an extra coordinate triad with the directions xw, yw, and zw (which are the used to specify the mirror operation).

If you want to make the resulting entities contribute to a cumulative selection, select a cumulative selection from the Contribute to list (the default, None, gives no contribution), or click the New button to create a new cumulative selection (see Cumulative Selections).

Select the Resulting objects selection check box to create predefined selections (for all levels — objects, domains, boundaries, edges, and points — that are applicable) in subsequent nodes in the geometry sequence. To also make all or one of the types of resulting entities (domains, boundaries, edges, and points) that the resulting objects consist of available as selections in all applicable selection lists (in physics and materials settings, for example), choose an option from the Show in physics (Show in instances if in a geometry part; Show in 3D in a plane geometry under a work plane in a 3D component) list: All levels, Domain selection, Boundary selection, Edge selection, or Point selection. The default is Domain selection, which is suitable for use with materials and physics defined in domains. For use with a boundary condition, for example, choose Boundary selection. These selections do not appear as separate selection nodes in the model tree. Select Off to not make any selection available outside of the geometry sequence.