Math 8 crossword

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Across
  1. 6. lines that never intersect
  2. 9. terms that have the same variable raised to the same power
  3. 10. an exact location in space
  4. 11. the distance of a circle through the center
  5. 13. a number that can be expressed as a fraction
  6. 14. the horizontal axis of a coordinate
  7. 16. the total area of all surfaces of a 3D object
  8. 18. a geometric transformation that rotates a shape or figure
  9. 19. a part of a line with two endpoints
  10. 21. the difference between the highest and lowest values in a set of numbers
Down
  1. 1. a letter or symbol that represents an unknown value
  2. 2. the chance of something happening
  3. 3. the middle value in a sorted set of numbers
  4. 4. the amount of space a 3D object occupies
  5. 5. lines that intersect at a 90 degree angle
  6. 7. the amount of surface a shape covers
  7. 8. the point of intersection of a graph with the x-axis
  8. 12. a combination of numbers, variables, and operations
  9. 15. the average of a set of numbers
  10. 17. the value that appears most often in a set of numbers
  11. 20. the distance from the center of a circle to any point on the circle