In an orthographic projection, what is true about the line of sight in relation to the plane of projection?

In orthographic projection, the line of sight is always perpendicular to the plane of projection. This means that the viewer's perspective is directly in line with the projection surface, allowing for accurate representation of the object's dimensions without distortion. This perpendicular relationship ensures that features of the object are projected in true size and shape, enabling a precise and technical depiction.

Orthographic projections involve multiple views of the same object, typically front, top, and side views, and this perpendicular alignment maintains the integrity of angles and distances as seen from the observer's perspective. This is crucial in technical drawings and engineering designs, where maintaining dimensional accuracy and clarity is essential for understanding and communication.

Other options, such as parallel lines of sight or curved lines of sight, do not apply in orthographic projection since they would result in distortions that are not desired in this type of representation. Therefore, the accurate definition of the relationship between the line of sight and the plane of projection is that it is perpendicular, ensuring clear and accurate visual communication of an object's attributes.