Math crossword puzzle

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Across
  1. 2. An expression which is made up of variables and constants, along with algebraic operations (addition, subtraction, etc.)
  2. 5. A pair of two numbers (or variables) written inside brackets and are separated by a comma
  3. 8. A number into which each number in a given set may be evenly divided
  4. 10. Any number that can be written as a fraction, where both the numerator (the top number) and the denominator (the bottom number) are integers, and the denominator is not equal to zero
  5. 12. A beginning or starting point
  6. 16. Inverse of a value or a number
  7. 20. A quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression
  8. 23. A side of a polygon or a face of a polyhedron, particularly one oriented perpendicular to the direction in which height is measured, or on what is considered to be the "bottom" of the figure
  9. 24. A two-dimensional plane that is used to identify and graph two-dimensional figures
  10. 25. Positive numbers, negative numbers and zero
Down
  1. 1. A number to be divided by another number
  2. 3. Comparing two numbers or quantities that are not equal
  3. 4. A part of a whole
  4. 6. The variables change in opposite directions: one increases while the other decreases, and vice versa
  5. 7. One of the types of numbers, which has a whole number and the fractional part separated by a decimal point
  6. 9. A solid shape that is bound on all its sides by plane faces
  7. 11. A pattern that can be cut and folded to make a model of a solid shape
  8. 13. Fractions that have different numerators and denominators but are equal to the same value
  9. 14. What is produced when two or more numbers are multiplied together
  10. 15. An alphabet or term that represents an unknown number or unknown value or unknown quantity
  11. 17. Factors that are common to two or more numbers
  12. 18. A statement that the values of two mathematical expressions are equal
  13. 19. A solid figure with many plane faces, typically more than six
  14. 21. A numerical or constant quantity placed before and multiplying the variable in an algebraic expression
  15. 22. The comparison of two quantities of the same kind, or the relationship of one similar quantity to another