complete the crossword puzzle below

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Across
  1. 3. Expression that consists of algebraic terms, operation symbols or bracket signs
  2. 4. exponent all numbers,letters,expression raise to 0 power is equal to 1
  3. 6. an angle between 90 degree-180 degree
  4. 9. the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
  5. 10. a theorem in geometry: the square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.
  6. 11. A relationship of variation between two variables in which the product is a constant
  7. 13. Equations that have one or more algebraic fractions
  8. 14. the quantitative relation between two amounts showing the number of times one value contains or is contained within the other
  9. 17. the branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of
  10. 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 (e.g., 3 in 23 = 2 × 2 × 2)
  11. 22. of symmetry A graph that passes through its minimum/maximum point
  12. 23. has equal sides and every angle is a right angle (90°)
  13. 25. mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other
  14. 27. the product of two irrational numbers
  15. 28. Quadratic graphs that are part of curved family
Down
  1. 1. the length of the opposite side divided by the length of the adjacent side
  2. 2. it involves nth root
  3. 5. we can obtain this ratio by multiplying or dividing both parts by the same constant.
  4. 7. The expression b²-4ac
  5. 8. The angle below horizontal that an observer must look to see an object that is lower than the observer
  6. 11. plural of index
  7. 12. it means four
  8. 15. longest side of a right-angled triangle
  9. 16. the trigonometric function that is equal to the ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse.
  10. 18. quadrilateral with four right angles
  11. 19. The angle above horizontal that an observer must look to see an object that is higher than the observer
  12. 21. An expression that involves radical sign (√͞ or √)
  13. 23. in the word quadrilateral, lateral means?
  14. 24. the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right triangle) to the hypotenuse
  15. 26. A relationship of variation between two variables in which one is a constant multiple of the other