Pythagorean Theorem

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Across
  1. 3. Philosopher and mathematician known to develop this theorem
  2. 6. Type of triangle used to apply this theorem.
Down
  1. 1. Another person who contributed to proving the theorem
  2. 2. Longest side in a right-angled triangle
  3. 4. A plane figure used when proving by rearrangement
  4. 5. The name of the other two sides of a right-angled triangle.