Answer: The hidden lines are represented by using dashes.
Hidden lines are used for showing surfaces that are not visible directly. It is because the view is obstructed by the other parts of the object. These lines are used for making a drawing easier to understand. Using dashes to represent hidden lines of an object is standard practice.
How are Hidden Lines represented?
Hidden lines are represented by using dashes. Dashes are the little horizontal lines i.e. commonly used to indicate a pause or a range.