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Great Circles and Small Circles

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Multiple Choice

What is a great circle?

  1. A circle on the Earth's surface that divides the Earth into two equal halves.
  2. A circle on the Earth's surface that passes through the Earth's center.
  3. A circle on the Earth's surface that is perpendicular to the Earth's axis.
  4. A circle on the Earth's surface that is parallel to the Earth's equator.
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