To obtain a grid azimuth from point A to point B, where should the protractor's index be placed?

To obtain a grid azimuth from point A to point B, where should the protractor's index be placed?

• A. On point B
• B. On the line AB
• C. On the midpoint
• D. On point A

Answer: (D)

Grid azimuth is the direction from the starting point toward the destination, measured from grid north. To capture that direction accurately, set the protractor so its index sits exactly on the starting point, point A. This pins the vertex of the angle at A, allowing you to align the line from A to B with the protractor’s scale and read the azimuth relative to grid north. If the index were placed elsewhere, such as on B or somewhere along the line, you’d be measuring from the wrong origin, which wouldn’t reflect the direction from A to B.

Grid azimuth is the direction from the starting point toward the destination, measured from grid north. To capture that direction accurately, set the protractor so its index sits exactly on the starting point, point A. This pins the vertex of the angle at A, allowing you to align the line from A to B with the protractor’s scale and read the azimuth relative to grid north. If the index were placed elsewhere, such as on B or somewhere along the line, you’d be measuring from the wrong origin, which wouldn’t reflect the direction from A to B.