This task shows how to create a symmetrical extension to a line. In other words, you are going to create a median to an existing line by clicking. Still, you can use the Sketch tools toolbar.
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Click Line
from the Profile toolbar.
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Click Symmetrical
that appears in the Sketch tools toolbar.
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Click the center point of the line which is to be assigned a symmetrical extension.
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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.
If needed, move the symmetrical extension to a new position.
