Mathematics

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Across
  1. 1. The ratio of the circumference of a circle to its diameter.
  2. 5. The distance around the edge of a circle.
  3. 8. A theorem that states that in a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides.
  4. 9. The operation of addition.
Down
  1. 1. A number that has exactly two distinct natural number divisors: 1 and itself.
  2. 2. The result of multiplying a number by itself.
  3. 3. A polygon with eight edges and eight vertices.
  4. 4. A polygon with ten edges and ten vertices.
  5. 6. The operation of subtraction.
  6. 7. The result of multiplying a number by itself twice.