Xenia's Crossword Puzzle

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Across
  1. 1. diagrams used to visually present the relationship between quantities that can be counted or measured
  2. 4. number or letter which an exponent refers
  3. 5. terms with same literal factors and which each letter has the same exponent in all of the terms
  4. 7. properties and relationships of figures in space
  5. 9. a set of pairs of input and output values
  6. 11. a fraction whose numerator or denominator,or both, also contains a fraction
  7. 12. set of values and variables
  8. 14. an equation that uses symbols for "less than"(<) and "greater than"(>) where an equation uses a symbol for "is equal to" (=)
  9. 15. at least one set of values for the unknowns that satisfies every equation in the system
  10. 16. a symbol which represents any number from a given replacement set
  11. 17. has an infinite number of solutions
  12. 20. number,letter or symbol whose value is fixed
Down
  1. 2. branch of mathematics that involves expressions with variables
  2. 3. polynomial with 2 terms
  3. 6. a single term
  4. 8. mathematical expressions
  5. 10. number in the algebraic term
  6. 13. means "inclined to learn" in Greek
  7. 18. a small number written on the upper right number of a number to indicate how many times it is used as a factor
  8. 19. numbers & symbols in a product