Answer:
The true north
Step-by-step explanation:
- As in order to measure distance on the earth surface, there must be starting point of zero and that can be used to measure the point of the reference and thus the bases of the line as the true north, the magnetic north, and the grid north and is thus a line from any point on the earth's surface towards the north pole. The True north is usually shown by a star. And this tells us about the latitude and the longitudinal extents of the earth's surface features.