maths crossword

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Across
  1. 3. lines having infinite solutions
  2. 6. lines which have a unique solution
  3. 8. graph of a quadratic polynomial
Down
  1. 1. perpendicular/hypotenuse
  2. 2. region of circle bound bw two radii and an arc
  3. 4. maximum number of zeroes a cubic polynomial can have
  4. 5. Polynomial with degree 1
  5. 7. highest frequency of observation