| Term | Definition |
| map | a representation of the features of a physical body such as earth. |
| true north | the direction to the geographic North Pole |
| magnetic declination | the difference between the magnetic north and the true north. |
| latitude | the distance north or south of the equator, expressed in degrees |
| equator | the imaginary circle halfway between the poles that divides the Earth into the Northern and Southern Hemispheres |
| longitude | the distance east and west from the prime meridian; expressed in degrees |
| prime meridian | the meridian, or line of longitude, that is designated as 0 degrees longitude. |