Local 483 Apprenticeship Practice Exam

Which line type on a blueprint represents edges not visible in the current view?

Edges visible in the current view Edges not visible in the current view Center lines of symmetry Dimension arrows

Correct Answer:

Edges not visible in the current view

Explanation:

In technical drawings, different line types convey what you can and can’t see in a given view. The line type used for edges that aren’t visible in the current view is the hidden line, drawn as a series of short dashes. This convention lets you understand features that exist but are obscured by other parts of the object. Visible edges are shown with solid lines, center lines denote symmetry or axes, and dimension arrows indicate measurements. So, for edges not visible in the current view, the appropriate line type is the hidden line.

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