math crossword

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Across
  1. 5. cutting a system of lines
  2. 6. assigns number to functions
  3. 8. letters and symbols to represent numbers
  4. 10. consist several terms
  5. 12. same shape and size
  6. 13. answer of division
  7. 14. represented by a straight line on graph
  8. 15. values of variable
  9. 17. 1000
  10. 18. 3d figure
  11. 19. longest side of a right triangle
  12. 20. contain quantities which are expressible
Down
  1. 1. to add
  2. 2. lines which do not meet
  3. 3. extend of 2d figure
  4. 4. number seperated by point
  5. 7. middle of a sorted list of numbers
  6. 9. to divide something or give a share
  7. 11. trigonometric value
  8. 16. 3-sided shape