Math crossword puzzle

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Across
  1. 2. is a type of variation where in variables increase or decrease together
  2. 6. is a four sided polygon
  3. 9. trapezoid name given to the graph of a quadratic function
  4. 10. it indicates that a variable varies directly with two or more variable
  5. 11. equation is a polygon with four sides
  6. 15. variation is a relation where one variable varies directly with two or more variables
  7. 16. triangle is a relation between the two variables
  8. 17. variation is a quadrilateral with 1 pair of parallel sides
Down
  1. 1. the comparison of two quantities of the same kind of unit written as a/b or a:b
  2. 3. of elevation is an equation that contains one unknown(x) and the highest degree of x is 2
  3. 4. two triangles which corresponding angles are congruent but corresponding side are proportional
  4. 5. is a type of variation where as one variable increase, the other variable decrease or vice versa
  5. 7. variation is the side formed by the vertices of two angles between
  6. 8. is the study of triangles
  7. 12. variation is the angle between the imaginary line of sight and horizontal line, where the object is above the observer
  8. 13. the set of real numbers
  9. 14. side is a trapezoid with congruent legs