complete the crossword puzzle below.

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