Maths

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Across
  1. 4. The square root of -1.
  2. 5. polygon with six sides.
  3. 6. If the discriminant is smaller than zero then there are two different _____ roots.
  4. 8. polygon where the sum of it's interior angles is 540
  5. 9. If the discriminant is bigger than zero then there are two different _____ roots.
Down
  1. 1. A relation between from set A to set B is called ________.
  2. 2. The lowest or the highest point of the curve in parabole.
  3. 3. Graph of the quadratic function.
  4. 4. If the discriminant is equal to zero then there are two _____ roots.
  5. 7. If each line segment whose endpoints are in polygon does not have any intersection point with the polygon.