What type of line is drawn with a series of dashes of equal length?

The type of line that is represented by a series of dashes of equal length is known as a hidden line. This line indicates edges or surfaces that are not directly visible in a view but are essential to depict in technical drawings. Hidden lines are crucial in conveying additional information about the features of an object, helping to illustrate parts that may be obscured by other components.

In technical drawings, hidden lines help convey information about the interior features or relationships between different components without cluttering the drawing. The consistent length of the dashes is a standardized convention to ensure clarity and readability, as it allows anyone reading the drawing to easily recognize what a hidden line signifies. Understanding the representation of hidden lines is vital for interpreting technical drawings accurately and effectively communicating design intentions.