math crossword

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Across
  1. 2. real roots , when discriminant>0
  2. 4. of sight , line drawn from eye of observer to given object
  3. 5. line which intersects circle at two points
  4. 7. distance of a point from y-axis
  5. 10. sum of probabilities of all elementary events of an event
  6. 13. pair of lines which are inconsistent
  7. 15. probability of impossible event
  8. 16. meaning of greek letter sigma
  9. 18. number of parallel tangents of a circle
  10. 22. max number of secants drawn in a circle
  11. 23. how many trigonometric ratios are there
  12. 24. of criteria to prove two triangles as similar
  13. 25. determines if a quadratic equation has real roots or not
  14. 28. polynomial , polynomial of degree 3 is called
  15. 29. of depression, the case when we lower our head to look at the object
  16. 30. of circle , area of four quadrants =
Down
  1. 1. , ore than and less than ogive are used to find out ______ of data
  2. 2. how many methods are there to solve a pair of linear equations
  3. 3. term ,a+(n-1)d gives
  4. 6. quadratic polynomial has how many zeroes
  5. 8. sum or difference of a rational and irrational number is
  6. 9. sum of all angles in a triangle
  7. 11. value of cosec 30
  8. 12. shape of a bucket
  9. 14. 2(l+b)h is ________ of cuboid
  10. 17. median mode, 3 measures of central tendency
  11. 19. AP, AP which is not finite
  12. 20. and cone , shape of ice cream cone includes ___and ___ figures
  13. 21. of integers,euclid's division lemma has to do with
  14. 26. frequency , frequency used for more than and less than ogive graphs
  15. 27. defined ,value of tan 90