Earth Geometry

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Across
  1. 2. zero degrees longitude, goes through Greenwich
  2. 4. latitude lines are also known as these
  3. 6. 90 degrees North
  4. 8. 90 degrees South
  5. 9. lines of longitude (and the equator) are known as these circles
  6. 10. horizontal lines around the Earth
  7. 11. longitude lines are also known as these
  8. 12. zero degrees latitude
  9. 13. the East West directed is quoted first or second in the co-ordinate
Down
  1. 1. lines of latitude are known as this type of circle
  2. 3. longitude measures which two of the four cardinal directions
  3. 5. latitude ordinate is quoted first or second in the co-ordinate
  4. 7. how many minutes in 1 degree
  5. 10. vertical lines around the Earth
  6. 14. latitude measures which two of the four cardinal directions