Great Circle
2. Shortest actual distance between two points
2. Shortest actual distance between two points
Great Circle
Rhumb Line
Rhumb Line
Coordinates
Coordinates
True Course
2. Aircraft over earth
2. Aircraft over earth
True Course
Track
2. Aircraft over earth
2. Aircraft over earth
Track
Dead Reckoning
Dead Reckoning
Radio Navigation
2. Radio navigation aids
2. Radio navigation aids
Radio Navigation
RNAV
Area Navigation
Area Navigation (RNAV)
Area Navigation (RNAV)
Global Positioning System (GPS)
2. satellites
Agonic Line
2. 0 degree magnetic declination east or west
2. 0 degree magnetic declination east or west
Agonic Line
Isogenic Line
2. Non-zero degree magnetic declination east or west