Math

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Across
  1. 1. A+B=
  2. 4. symbol typically a letter
  3. 6. number zero
  4. 7. modulus of a real number
  5. 11. measured in regions of 3 dimensions
  6. 12. longest chord of the circle
  7. 13. range of function
  8. 14. horizontal and vertical touch
  9. 15. average number
  10. 16. figure of two rays
  11. 19. deviation amount of variation value
  12. 20. y inputs
  13. 21. AxB=
  14. 22. divisor of integer
  15. 23. distance
Down
  1. 2. product of any quantity and an integer
  2. 3. branch of mathematics
  3. 5. number expressed in quotient
  4. 8. operation involving two numbers
  5. 9. x inputs
  6. 10. refers to value most frequently
  7. 15. middle number
  8. 17. perimeter of circle
  9. 18. geometric theorem
  10. 19. direction line on a plane