Math vocabulary crossword puzzle

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Across
  1. 6. a change of position of a figure
  2. 8. two lines that never intersect
  3. 9. Formed by two rays with a common endpoint
  4. 10. an angle that’s 90 degrees
  5. 12. average of numbers
  6. 13. most common number
  7. 16. an angle under 90 degrees
  8. 17. Number that measures variability consistency
  9. 18. Line that can incline or decline
  10. 19. mathematical problem
Down
  1. 1. double
  2. 2. change of direction of a figure
  3. 3. a figure after being changed
  4. 4. two lines that intersect
  5. 5. total amount of a shape
  6. 7. largest number minus the smallest
  7. 11. medium number
  8. 14. an angle over 180 degrees
  9. 15. faction in simplest form
  10. 16. adding numbers