## sharon_penn 2 years ago Research and provide a brief history of the Pythagorean Theorem (1–2 paragraphs). Be sure to site the sources of information you used. There are many different proofs of the Pythagorean Theorem. Research and choose three different proofs. Outline and provide an explanation for each. Be sure to site the sources of information you used. . If you had to prove the Pythagorean Theorem to another person, which proof would you use? Why

1. singlesixx

My favorite proof is the rectangle one. It's simple and elegant. I don't approve of doing homework for people, so I'm gonna leave you with that idea and let you look it up.

2. aajugdar

x_x|dw:1363543962299:dw|

3. sharon_penn

The one you just drew, what proof would it be?

4. singlesixx

That's one step of the rectangle proof.

5. sharon_penn

I see

6. sharon_penn

Thank you both :)

7. singlesixx

You're welcome! If you want a starting place to look for history, I would suggest looking into Pythagora's school.

8. sharon_penn

Thanks I will, I'm also Googling the rectangle proof right now, they have it for dummies.lol

9. sharon_penn

I just want to get it finished already :)

10. satellite73

take a look at this http://www.math.ubc.ca/~cass/courses/m446-03/pl322/pl322.html theorem was known by the Babylonian centuries before pythagoras

11. sharon_penn

ok I will, Thanks satellit73

12. singlesixx

Wonderful. Also, if you find the Pythagorean Theorem particularly interesting, I would suggest Simon Singh's book, Fermat's Enigma. It's about Fermat's Last Theorem, which went unproved for over 300 years. It's a variation of the Pythagorean Theorem, only it deals with exponents over two. For example, a^3+b^3=c^3. Fermat said there were no solutions. However, he did not write down his proof, so we couldn't be sure he was correct. Anyway, it's a very interesting book by one of my favorite mathematicians.

13. singlesixx

Satellite, the Babylonians knew about it, but couldn't prove it. A student at Pythagora's school was the first to write a proof.

14. skullpatrol

Have you tried wikipedia?

15. singlesixx

There's always stuff on Wikipedia, but people come here for help from real people (not saying wiki writers aren't real) that can explain things in steps with extra information. Different people explain in different ways, which is important. Sometimes, the teacher's explanation or the wiki's explanation doesn't click, so they come to us.

16. sharon_penn

I'll try anything

17. skullpatrol

It is a good place to start :)

18. singlesixx

Oh, I just thought of this. There are actually two rectangle proofs. One is the proof by rearrangement and the other is Euclidian proof. Both involve rectangles.

19. skullpatrol

There are more proofs of this theorem than any other.