How are azimuths measured?

Azimuths are typically measured clockwise from the north, with 0 degrees representing true north. As the angle increases in a clockwise direction, it can go up to 360 degrees, effectively covering all possible directions around a point. This convention allows for clear communication in navigation, surveying, and geodetic applications since it aligns with the way compasses are oriented and how most maps are read, simplifying direction finding and location description.

The other methods listed, while they describe angles relative to different reference points or directions, do not align with the standard practice for measuring azimuths in the field. Using different starting points or directions might lead to confusion and inconsistent readings, which is why the standard approach of measuring from the north is vital in geodetic and navigational contexts.