Engineering Drawing
The principle reason for using an auxiliary view is ________.

To create a true projection plane from an inclined plane in one of the primary views
To locate center marks
To show cylinders as ellipses
To eliminate hidden lines

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Engineering Drawing
How can the drafter prevent Auto-CAD from placing or stacking another center mark on a circle when adding a diameter dimension to it?

Use the Properties dialog box to turn off the center mark of the dimension
Use the trim tool to take away the stacked center mark
It can't be done
Explode the dimension and then erase the center mark

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