First Day of Math 10c Trivia

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Across
  1. 1. On which continent was the first recorded instance of math games played?
  2. 4. a term to indicate the likelihood of something occurring
  3. 5. The word used for perimeter of a circle
  4. 7. the way in which a convex shape curves
  5. 9. The only number that does not have a Roman numeral
  6. 11. what is the Roman numeral "X" equal to?
  7. 12. What does the term 'giga' refer to?
  8. 13. A number that is twice the sum of its digits
  9. 14. degrees Right-angled triangle
  10. 15. an angle greater than 90 degrees but less than 180
Down
  1. 2. the number of popsicles each student would get if there were 64 popsicles for 16 students
  2. 3. The number of sides in a nonagon
  3. 6. a geometric form without any vertices
  4. 7. What is 5 to the power of zero equal to?
  5. 8. the only prime number that is even
  6. 10. The longest side of a right-angled triangle
  7. 11. the number of cupcakes in a baker's dozen