PI Crossword

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Across
  1. 2. devised the symbol of pi
  2. 4. ratio of circumference and diameter
  3. 6. first number in pi
  4. 9. birthday is on pi day
  5. 10. pi is a part of this mythology
  6. 11. first to calculate pi
  7. 13. numerator in pi equation
Down
  1. 1. first to celebrate pi day
  2. 3. denominator in pi equation
  3. 5. second number in pi
  4. 7. never-ending
  5. 8. discovered the most number of digits of pi
  6. 12. third number in pi