A Latin and Greek Number Crossword Puzzle You Can Appreci-Eight

123456789101112131415161718192021
Across
  1. 2. The game "Tetris" is based on the prefix tetra-. This is because the goal of the game is to fill all ____ sides of the board.
  2. 6. What amount did the Greek word "myriad" represent (it is still used this way today)
  3. 7. Decem-, as used in "December," means ____.
  4. 8. The Spanish word for five is ______.
  5. 10. X
  6. 12. What is the meaning of "numerus, numeri"?
  7. 13. The German word for three is _____.
  8. 14. "Duo" means ____.
  9. 16. "C" is the Roman Numeral for what number?
  10. 19. If you live a solitary life, you are ____.
  11. 20. It originally meant fullness, but now it means an overabundance.
  12. 21. This prefix means "half."
Down
  1. 1. If you aNIHILate something, you reduce it to ____.
  2. 3. MI
  3. 4. XCIV
  4. 5. How many sides does a heptagon have?
  5. 9. XIX
  6. 11. Protoplasm is regarded as the ______ form of living matter.
  7. 15. An AMBIdextrous person prefers ____ of their hands.
  8. 17. The Latin number system.
  9. 18. "Sextum" means ____.