A grid azimuth is determined by

A grid azimuth is determined by

• A. A compass
• B. A protractor and the grid north
• C. The magnetic north
• D. The scale bar

Answer: (B)

Grid azimuth is the angle measured on a map from the map’s grid north to the line of interest. To determine it, you align a protractor with the map’s grid north—the vertical direction along the grid lines—and read the angle from that zero line to the line you’re measuring, moving clockwise. This use of the map’s grid north distinguishes grid azimuth from other azimuths because it stays tied to the map’s coordinate system rather than the Earth's magnetic field or true north. The protractor provides the angular reading, and grid north provides the reference direction. A compass would point to magnetic or true north, not grid north, and the scale bar is for distance, not direction.

Grid azimuth is the angle measured on a map from the map’s grid north to the line of interest. To determine it, you align a protractor with the map’s grid north—the vertical direction along the grid lines—and read the angle from that zero line to the line you’re measuring, moving clockwise. This use of the map’s grid north distinguishes grid azimuth from other azimuths because it stays tied to the map’s coordinate system rather than the Earth's magnetic field or true north. The protractor provides the angular reading, and grid north provides the reference direction. A compass would point to magnetic or true north, not grid north, and the scale bar is for distance, not direction.