Make Oblique
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Makes dimension lines slanted.
Choosing Make Oblique is the same as running the Dimension Edit command and selecting the Oblique option.
To oblique extension lines
A dimension with oblique extension lines.
Choose Oblique lines.
Select linear dimensions to make oblique: Select the dimensions you want to change.
Enter obliquing angle: Enter the angle at which want to oblique lines.
TIP Oblique extension lines by 30 degrees for dimensions in isometric drawings.