Click Trim
in the
Operation toolbar.
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Select the use edge between the two lines.
Select a first line. An arc is created based on the use-edge and the original use-edge is
put in construction mode as shown here.
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Click Trim
.
Select the arc between the two lines.
Select the second line.
The mark, which is put in construction mode, and the arc are displayed
in the specification tree.
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