The forward azimuth of a line is defined as the azimuth measured from which direction?

• A. From A toward B
• B. From B toward A
• C. From the north direction
• D. From the equator toward the pole

Answer: (A)

Forward azimuth is the direction of a line as you travel from the starting point toward the ending point, measured from north. This means the angle is defined at point A in the direction toward B, with north as the reference and measured clockwise. It describes how you would move from A to reach B. The opposite direction would be the back azimuth, which is measured from B toward A, not from A toward B. The reference for azimuth is north, not the equator, and while north is the standard reference, the question focuses on which endpoint the angle starts from, hence A toward B is the correct description.