You can mirror elements by defining a mirror axis or by using a linear element as a mirror axis. You can also mirror and copy elements.
To mirror about an existing mirror axis or linear element
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Select one or more elements.
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On the Change toolbar, click Mirror .
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If you want to copy the mirrored elements, click Copy on the ribbon.
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Locate a mirror axis. The mirrored elements are displayed dynamically on the other side of the axis.
If you locate a linear element, the element can be part of the selection set.
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Position the pointer so that the mirrored elements are where you want them, and then click.
To mirror about a mirror axis that you define
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Select one or more elements.
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On the Change toolbar, click Mirror.
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If you want to copy the mirrored elements, click Copy on the ribbon.
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Define one end of the mirror axis by click in free space or by clicking a key point. The software displays the mirror axis and mirrored elements dynamically.
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Move the pointer until the mirror axis and the mirrored elements are in position where you want them to be, and then click.
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If Maintain Relationships is set, the software places a symmetric relationship when you mirror and copy elements. The mirror axis is used as the symmetry axis.
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Relationships within the selection set are copied to the mirrored elements if they are still applicable.
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You can click Mirror before you select elements to mirror.
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Instead of using Copy on the ribbon to mirror and copy, you can hold CTRL while you click to position the elements.
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Instead of positioning the mirror axis dynamically, you can use the Position Angle box on the ribbon.
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You can use relationship indicators to define a mirror axis.
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You can use other view manipulation commands, such as Zoom and Pan, while you are using Mirror.