mathematics

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Across
  1. 1. the point where x and y axis intersect
  2. 4. a polynomial with degree 3
  3. 8. the longest side in right-angled triangle
  4. 9. points on a straight line
Down
  1. 2. a no. which cannot be expressed as fraction
  2. 3. a polygon in which all sides and angles are equal
  3. 4. trigonometric function that is the reciprocal of the sine.
  4. 5. triangle with no sides equal
  5. 6. adjacent sides are equal but diagnols are not equal
  6. 7. point where 3 meridians meet