Bella S. Crossword puzzle

1. an angle immediately next to another angle.
8. interest is an amount of money a lender charges a borrower for a loan
9. A pair of angles directly opposite of each other formed by intersection of straight lines.
11. an enlarged or reduced drawing that is proportional to the original object
12. two angles whose sum is 90º.
13. which interest is calculated.
16. Angles that have the exact same measure or portion.
18. a ratio that compares two different quantities which have different units.
21. how much of one thing there is compared to another thing
22. The expression when numbers are not equal
23. the difference between estimated value and the actual value in comparison to the actual value
24. also the amount of money paid as a return on an investment.
26. the ratio of two different units, with denominator as 1.
27. the amount of space covering the outside of a three-dimensional shape
30. Angles that add up to 180 degrees.
31. an equation in which two ratios are set equal to each other

2. the ratio between two directly proportional quantities
3. the probability of an event actually happening.
4. the ratio of the number of favourable outcomes to the number of possible outcomes
5. the amount of money borrowed or invested,
6. a rule used to count the total number of possible outcomes in a situation
7. dividing the decreased value by the original value and multiplying that with 100
10. interest is a fee paid for borrowing money or other assets.
14. a kind of reduction or deduction in the cost price of a product
15. Two sides are said to be congruent if they have the same length.
17. a measure of its steepness.
19. the amount of increase or decrease the final value has from the initial value, in terms of 100
20. A value or values which, when substituted for a variable in an equation, make the equation true.
25. the ratio of corresponding sides on two similar figures.
28. new value−original value)original value×100
29. the difference between the selling price and operating expenses