algebra crossword 3

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Across
  1. 2. roman numeral of ten
  2. 5. the total distance around outside a polygon
  3. 6. the formal laws of reasoning
  4. 7. the process of breaking down numbers
  5. 9. the study of lines
  6. 12. a number being divided into equal parts
  7. 13. two half that match perfectly
  8. 18. a polygon with eight sides
  9. 19. a written symbol denoting a number value
  10. 21. the same as the average
Down
  1. 1. a number that divides by another number exactly
  2. 3. not infinite
  3. 4. the area between an arc
  4. 8. the top number in a fraction
  5. 10. parallelogram with four sides of equal length
  6. 11. numbers from 1-9
  7. 12. unit of an angle represented by a circle
  8. 14. the middle value
  9. 15. a ratio with the denominator of 100
  10. 16. shapes of the same size and shape
  11. 17. the mean or average
  12. 20. list of numbers that occur frequently