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World 5 · The Shortest Way Round · 7 min · PRO

Flights in the real world

Winds, airspace and safety

PRO · Map Lab

World 5: The Shortest Way Round is part of PRO

The first world of Map Lab is free. PRO opens the other 24 lessons in 6 worlds — simulations, quizzes and all.

  • Great circles
  • Measuring a great-circle distance
  • Why straight routes look curved
  • Noon moves west
  • The longitude problem
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

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