The Mirror Tool can be used to directly mirror a selected line or boundary along a baseline you have selected. The mirrored object will be created in the same class as the source object, with all attributes cloned, except for dates.
Select the line or object your would like to mirror.
Selecting the object to be mirrored
Open the Upper and Lower App Bars by right-clicking with the mouse, pressing windows + z on a keyboard, or swiping up from the bottom on a touch screen.
The Upper and Lower App bars
Select the Edit icon .
Next, select the Mirror Icon .
Select the baseline along which you would like the new object to mirror, the new object will now appear mirrored along that baseline.
The new object mirrored on the right of the original
Using the Mirror Tool
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