Franz's Crossword Puzzle

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Across
  1. 3. This shape has no point.
  2. 5. Which type of angle has 90 degrees?
  3. 9. The opposite of negative.
  4. 11. Math Puns are the first _____ of madness
  5. 13. What tool is best suited for math?
  6. 15. What's a math teacher's favorite kind of tree?
Down
  1. 1. It goes up and down.
  2. 2. This angle is known to be really cute.
  3. 4. Cheer up a little, don't be so _______.
  4. 6. In addition, you do one number _____ the other number.
  5. 7. I love Ice Cream waffle ______'s!
  6. 8. What shape do you always have to be careful of?
  7. 10. I can't hear the show, turn up the _______.
  8. 12. Everyone come and get your slice of ___.
  9. 14. Sharing is caring, give him ____ pie.