Symmetry and Axisymmetry
Symmetry visualization allows partially modeled geometry to be shown in full extent by reflection and/or duplication or in the case of axisymmetric models, by 3D geometry generation.
The Symmetry dialog allows you to define options which can be used to visualize what a whole model would look like when you are modeling only a half, quarter, or a partial segment or as axisymmetric.
See the Symmetry Dialog topic for additional information regarding using this dialog.