What is an orthogonal drawing used for?

An orthogonal drawing is primarily used to represent a three-dimensional object in two dimensions by displaying the object from multiple perspectives. This type of drawing typically includes different views, such as the front, top, and side, all aligned to a common set of axes. The clarity and precision of orthogonal drawings make them indispensable in engineering and design contexts, where visualizing the relationship between dimensions is critical. This aligns with the correct answer, as it emphasizes the ability to visualize all lines of a shape in a 3D format through accurate projections on a flat surface, thus facilitating a comprehensive understanding of the object's geometry.