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However, people from ancient astronomers to modern navigators calculated the arc lengths and angles of triangles on a sphere. They used special globes and instruments to make measurements and teach.
The Associated Press on MSN3mon
Final crystal triangles installed on Times Square ball ahead of New Year's EveNEW YORK (AP) — The last of the crystal triangles that make up this ... from which the 11,875-pound (5,386-kilogram) geodesic ...
However, people from ancient astronomers to modern navigators calculated the arc lengths and angles of triangles on a sphere. They used special globes and instruments to make measurements and teach.
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