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Great-circle distance & bearing — interactive Geography demo

Haversine on a sphere, R = 6371 km — the shortest path is a great circle

Run this interactive Geography demo live below, or download it as a single self-contained HTML file that works offline in any browser or LMS — one of 1,900+ free interactive teaching demos on Notedeck. With Notedeck you upload your own materials and turn them into interactive courseware, question papers with answer keys, and AI-taught lessons.