Mathematics Crossword Puzzle

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Across
  1. 4. sequence which follows a definite pattern
  2. 6. line joining centre of circle to any point on circle
  3. 9. Concept which numerically measures the degree of certainty of occurence of events
  4. 10. Line which intersects a circle at 2 points
Down
  1. 1. The nth term of A.P
  2. 2. line joining circle at any one point
  3. 3. Perimeter of a circle
  4. 5. 1/4 of a circular disc
  5. 7. Continuous piece of a circle
  6. 8. Objects having definite shape and size