What type of line would show the travel path of a moving part on a drawing?

What type of line would show the travel path of a moving part on a drawing?

• A. Phantom line
• B. Center line
• C. Hidden line
• D. Section line

Answer: (A)

Phantom lines are used to show the movement path of a moving part. They’re drawn lighter and with a dashed pattern to indicate positions or trajectories the part may take, rather than the actual solid edges in the current view. This conveys motion without implying a fixed shape. Center lines mark axes or centers of symmetry, hidden lines depict edges not visible in the view, and section lines show where a part is cut to reveal interior features. Because the goal is to represent motion or possible positions, phantom lines are the appropriate choice.

Phantom lines are used to show the movement path of a moving part. They’re drawn lighter and with a dashed pattern to indicate positions or trajectories the part may take, rather than the actual solid edges in the current view. This conveys motion without implying a fixed shape. Center lines mark axes or centers of symmetry, hidden lines depict edges not visible in the view, and section lines show where a part is cut to reveal interior features. Because the goal is to represent motion or possible positions, phantom lines are the appropriate choice.