Alphabet of Lines & Line Weights

Line symbols used in technical/architectural drawings.

• Expressive Lines

• Contour Lines

• Alphabet of Lines

• Outline

A medium thick line composed of short dashes that represents the surface or edges that cannot be seen.

• Visible Line

• Hidden Line

• Dimension Line

• Center Line

A thin line that extends from the object in order to show dimension limits.

• Extension Line

• Dimension Line

• Hidden Line

• Phantom Line

Line used to indicate the part of the drawing to which a note refers to.

• Extension Line

• Leader Line

• Visible Line

• Center Line

Which one doesn't belong to the group?

• Contour Lines

• Bold Lines

• Medium Lines

• Light Lines

What type of line weight is used to define the primary objects in a drawing?

• Bold Lines

• Medium Lines

• Guidelines

• Light Lines

These are lines used for secondary objects in a drawing to give emphasis to the primary objects .

• Bold Lines

• Medium Lines

• Light Lines

• Border Lines

A type of light line used to convey information about the drawing.

• Action Lines

• Information Lines

• Fill Patterns

• None of the above

It is used to create margin on the drawing sheet.

• Action Lines

• Construction Lines

• Bold Lines

• Border Lines

Thick lines used to indicate an imaginary cut through an object along the line.

• Viewing Plan Line

• Long Break Line

• Cutting-plane Line

• Short Break Line