Pi Puzzle

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Across
  1. 2. Shares a birthday with pi day
  2. 5. distance from center if circle to circumference
  3. 7. Day of pi (pi day)
  4. 8. line that passes through a circle
  5. 10. Developed the Pi symbol
Down
  1. 1. distance around a circle
  2. 3. what type of number is pi
  3. 4. first 5 digits of pi
  4. 6. alphabet pi is from
  5. 9. Founder if pi