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    5. Great-circle distance on the surface of the Earth

    Great-circle distance on the surface of the Earth

    Example · High school

    Terms

    TermThis exampleWhy
    metric ✓ Great-circle distance is a metric on the sphere.
    norm ✗ Great-circle distance does not come from a norm, because the sphere is not a vector space.

    Distinctions using this example

    • Norm vs. metric vs. inner product

    All examples · All distinctions · All definitions

    Collection: Examples

    Updated: November 8, 2026

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