Pythagoras' Theorem

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Across
  1. 2. a 3 number sequence that is supposed to add up to A², B², and C²
  2. 4. the name for the longest side of a triangle
  3. 6. a formula, proposition, or statement in mathematics
Down
  1. 1. the equation of dividing A number by its self
  2. 3. to make a number or decimal and turn it into the next highest number
  3. 5. a shape with three sides that equal 180 degrees