Click Line
in the Profile toolbar.
Click Symmetrical
that appears in the Sketch tools
toolbar.
Click the center point of the line which is to be assigned
a symmetrical extension.
![](../DysUserImages/centerpoint.gif)
Drag the cursor to the desired location.
The median appears. It is perpendicular to the line, at the line midpoint.
Click to locate the symmetrical extension.
![](../DysUserImages/centerpoint01.gif)
The median is created. If needed, move the symmetrical
extension to a new position.
![](../DysUserImages/centerpoint02.gif)
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