Maths club

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Across
  1. 3. the smallest number to have "a" in it number name
  2. 5. A number which cannot be represented using algebraic number
  3. 7. which theorem states the sum of the squares of any two sides of any triangle equals twice the square on half the third side, together with twice the square on the median bisecting the third side ?
  4. 9. which irrational number was discovered first
Down
  1. 1. full form of "p" in pedmas
  2. 2. who discovered the pascal's triangle?
  3. 3. Euler's line deals with
  4. 4. A number which can not be represented in Roman numerals
  5. 6. a step by step procedure by which an operation can be carried out
  6. 8. the only number that is spelt with letters arranged in alphabetical order.