Navigation PPLbasic
The shortest surface distance between two points on a spherical Earth is represented by an arc of a ____.
Answer
great circle
Explanation
A great-circle arc is the shortest route between two points on a spherical Earth model. A rhumb line may be more convenient to follow because it maintains a constant direction, but it is usually longer unless it follows the equator or a meridian.\n\n**Key takeaway:** Shortest route is a great-circle arc.\n\n**Glossary:** **Great circle**: a circle whose plane passes through the Earth's centre.
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