Elsie's crossword puzzle

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Across
  1. 3. the actual result of an experiment, which may be different from the theoretical probability
  2. 4. a ratio between two sets of measurements
  3. 6. angels are congruent when they are the same size
  4. 8. the relationship between two values that are not equal
  5. 10. two angles add up to 180 degrees
  6. 11. the ratio between two proportional quantities
  7. 12. how much a retailer increases the price over what they paid for it
  8. 14. a reduction in a price
  9. 15. a drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount
  10. 16. the angles opposite each other when two lines cross
  11. 18. the total amount of money borrowed (or invested), not including any interest or dividends
  12. 20. interest calculated as a percent of the original loan
  13. 21. the comparison of two things of the same kind
  14. 22. two angles that have a common side and a common vertex (corner point), and don't overlap
  15. 23. describes how likely an event is to occur
  16. 25. total area of the surface of a three-dimensional object
  17. 27. money paid for the use of other money
Down
  1. 1. the percent change in a value compared to its initial value
  2. 2. change between an old value and its new value
  3. 5. a rule used to count the total number of possible outcomes in a situation
  4. 7. two ratio or fractions are equal
  5. 9. work out an answer to a problem
  6. 13. compares an approximation or estimate to an exact value compared to it's initial value
  7. 15. the steepness of a line
  8. 17. two angles are Complementary when they add up to 90 degrees
  9. 19. difference between the final value and the initial value, expressed in the form of a percentage
  10. 24. a ratio between two measurements using different units
  11. 26. a comparison of two measurements in which one term has the value of one