Mathematics

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Across
  1. 3. a place where mummies are buried
  2. 6. father of Math
  3. 8. double action in mathematics
  4. 9. a thing which has a start segment and end
Down
  1. 1. unknown value in an algebraic expression
  2. 2. he discovered zero
  3. 3. a famous three letter French dish
  4. 4. slanting line in a triangle
  5. 5. if we get this in our examination people will tell us to boil and eat
  6. 7. a thing which has a start not an end