equator
Lines of latitude circle around Earth. The Equator is a line of latitude right in the middle of the planet. Latitude is divided into degrees: 90 north of the Equator and 90 south of the Equator. One degree is subdivided into 60 minutes. One minute is subdivided into 60 seconds. The Equator is at 0. The Equator is an equal distance from both the North and South Poles. If you know your latitude, you know how far you are north or south of the Equator.