Which line indicates dimensions of arcs, circles and detail?

Which line indicates dimensions of arcs, circles and detail?

• A. Center Line
• B. Construction Line
• C. Hidden Line
• D. Leader Line

Answer: (D)

A leader line is used to call out dimensions or notes for a specific feature, including arcs and circles. It connects the feature to the dimension text or detail note, helping keep the annotation clear and directly linked to the correct part of the drawing. This avoids clutter on the drawing itself and makes it easy to see which dimension applies to which feature. Center lines mark the center of arcs or circles, not their dimensions. Construction lines are light guides used during drafting, not for labeling dimensions. Hidden lines show edges that aren’t visible in the view, not dimensional information.

A leader line is used to call out dimensions or notes for a specific feature, including arcs and circles. It connects the feature to the dimension text or detail note, helping keep the annotation clear and directly linked to the correct part of the drawing. This avoids clutter on the drawing itself and makes it easy to see which dimension applies to which feature.

Center lines mark the center of arcs or circles, not their dimensions. Construction lines are light guides used during drafting, not for labeling dimensions. Hidden lines show edges that aren’t visible in the view, not dimensional information.