Engineer Battalion Promotion Board Practice Exam

What is the term for a horizontal angle measured from a north baseline?

Azimuth Bearing Heading Direction

Correct Answer:

Azimuth

Explanation:

The term is azimuth. In surveying and navigation, azimuth is the angle measured in the horizontal plane from a baseline aligned with north, typically going clockwise from north. This means 0 degrees lines up with north, 90 degrees with east, 180 with south, and 270 with west. This definition directly matches “a horizontal angle measured from a north baseline.” For contrast, bearing is another way to describe direction that can use quadrant notation (like N30E) or an azimuth value, but it isn’t defined strictly as the horizontal angle from north. Heading refers to the direction an object is facing, not the measured angle from north in the horizontal plane. Direction is a broad term and not a precise measurement.

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