Zayden's crossword puzzle

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Across
  1. 4. The total area of the surface of a three-dimensional object.
  2. 5. A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount (called the scale).
  3. 8. the difference between the final value and the initial value, expressed in the form of a percentage.
  4. 9. These two angles (140° and 40°) are Supplementary Angles, because they add up to 180°:
  5. 11. show that change as a percent of the old value ... so divide by the old value and make it a percentage:
  6. 12. the actual result of an experiment, which may be different from the theoretical probability
  7. 13. Percent goes down
  8. 15. describes how likely an event is to occur.
  9. 16. compares two values, showing if one is less than, greater than, or simply not equal to another value.
  10. 17. A value, or values, we can put in place of a variable (such as x) that makes the equation true.
  11. 19. Subtract one value from the other. Ignore any minus sign.
  12. 21. Two angles are Adjacent when they have a common side and a common vertex (corner point), and don't overlap.
  13. 23. a ratio between two corresponding sides of similar figures.
  14. 24. These two angles (40° and 50°) are Complementary Angles, because they add up to 90°
  15. 25. shows the relative sizes of two or more values
  16. 26. A comparison of two related quantities.
  17. 27. How steep a line is
Down
  1. 1. two sides are said to be congruent if they have the same length
  2. 2. How much of something per 1 unit of something else.
  3. 3. How much a retailer increases the price over what they paid for it (which is how they make money to pay for their costs and hopefully make a profit).
  4. 4. Interest calculated as a percent of the original loan.
  5. 6. The constant value (often written k) relating amounts that rise or fall uniformly together.
  6. 7. The Fundamental Counting Principle states that if an event or decision has a possible outcomes or choices, and another event has b possible outcomes or choices, then the total number of possible unique combinations of outcomes between the two is a⋅b.
  7. 8. The total amount of money borrowed (or invested), not including any interest or dividends.
  8. 10. Congruent Angles have the same angle (in degrees or radians). That is all.
  9. 14. Sometimes discounts are in percent, such as a 10% discount, and then you need to do a calculation to find the price reduction.
  10. 18. The interesting thing here is that vertical angles are equal:
  11. 20. Money paid for the use of other money.
  12. 22. says that two ratios (or fractions) are equal.