Mathematics

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Across
  1. 1. The father of Pythagoream theorem
  2. 4. the greatest greek mathematician alive
  3. 5. the numbers not divided two
  4. 7. The father of Euclidean geometry
Down
  1. 2. Killed by Romas while doing geometry in sand
  2. 3. The father of the thales theorem
  3. 6. The numbers divided by two