Pi-Day Crossword

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Across
  1. 2. Pi is this type of number
  2. 5. Most common decimal
  3. 7. Dessert with crust
  4. 9. Has birthday on Pi-day
  5. 11. Friend who loves math
  6. 12. Newton's favorite dessert
  7. 13. Author of 'Life of Pi'
Down
  1. 1. Pi r squared = area of ...
  2. 3. Smallest prime number
  3. 4. Symbol for division
  4. 6. Letter in this alphabet
  5. 8. Number missing from first 31 digits
  6. 10. Pie chart in French
  7. 12. Made first calculation with Pi