School subject

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Across
  1. 2. external envelop of the eye. (science)
  2. 7. Help to find the apothem of a triangle (math)
  3. 9. It's the biggest organ of the human anatomy (science)
  4. 10. The first part of the middle ear (science)
Down
  1. 1. a surface consisting of all points located at the same distance from a point called the center.(Math)
  2. 3. The act that allow to the English compagnie to sell their tea less expensive than the Treize-Colonie (history)
  3. 4. He discover America, only the last name (history)
  4. 5. The people who didn't agree with the independence of the Treize-Colonie (history)
  5. 6. It's the external part of the skin (science)
  6. 8. The Little head riding hood is a ... story (french)