--------Math week!--------

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Across
  1. 2. A Greek philosopher who had given an important theorem in geometry
  2. 4. math week is celebrated on whose birthday?
Down
  1. 1. This person is known as the "human computer"
  2. 3. Another Greek philosopher known for giving many postulates and theorems of geometry
  3. 5. He was the first person to calculate the value of pi