Dimension lines are terminated with __________ lines.

Dimension lines are terminated with extension lines to clearly indicate the points between which a dimension is measured. Extension lines connect the dimension line to the points of interest on the drawing, ensuring that the measurements are accurately understood. This connection helps in visualizing the actual physical distance being referenced in the plan or elevation view, allowing for precise construction based on the provided dimensions.

In contrast, leader lines are used to direct attention to a specific note or feature on the drawing and are not used for termination of dimension lines. Break lines indicate an interruption in an object for clarity and are not relevant to dimensioning. Cut lines typically represent where a section is taken through the building or structure, not for defining dimensions directly. Thus, extension lines serve a vital and specific role in printreading and accurately conveying measurements in construction drawings.