What type of lines should be used to represent hidden lines in an isometric sketch?

In isometric sketches, hidden lines are typically represented by dashed lines. This convention helps distinguish visible edges from those that are not visible in the drawing. The use of dashed lines signals to the viewer that there are features behind or obscured by other elements, allowing them to understand the full shape and complexity of the object being represented. This distinction is critical for accurately conveying the design intent and ensuring that all necessary details are communicated clearly without confusion.