1. It is the angle from the horizontal to the line of sight of the observer to the object below.. A. Line of Sight C. Angle of Depression B. Angle of Elevation D. Right Angle _2. It is the angle from the horizontal to the line of sight of the observer to the object above. A. Line of Sight C. Angle of Depression B. Angle of Elevation D. Right Angle 3. It refers to an imaginary line that connects the eye of an observer to the object being observed. A. Line of Sight C. Angle of Depression B. Angle of Elevation D. Right Angle _4. Given the figure below, which refers to t A. angle R B.