the main position of Pythagoras theortheor
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The Pythagorean theorem tells us that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
James Garfield Was the Only U.S. President to Prove a Math Theorem. The Pythagorean Theorem has been proved many times, and probably will be proven many more times. But only one proof was made by a United States President. ... He had a lively interest in math, and studied even after he decided to run for Congress.
Pythagoras and his colleagues are credited with many contributions to mathematics. The following is an investigation of how the Pythagorean theorem has been proved over the years. The theorem states that: "The square on the hypotenuse of a right triangle is equal to the sum of the squares on the two legs" (Eves 80-81).