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## #1 2012-11-09 12:20:57

Bosworth.Joshua
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### Teach Pythagorean Theorem in 10 seconds

Everyone knows A²+B²=C², but this is often taught without any explanation as to why.

I'm not an established user yet (no link posting) so

[Thanks to the admin for posting the animation!]

Last edited by Bosworth.Joshua (2012-11-09 12:55:42)

## #2 2012-11-09 12:41:55

bobbym

Online

### Re: Teach Pythagorean Theorem in 10 seconds

I have posted the animation here.

That is the best I can do to just keep the math and leave out the strong comments.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #3 2012-11-09 12:57:07

Calligar
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### Re: Teach Pythagorean Theorem in 10 seconds

Very interesting...

Life isn’t a simple Math: there are always other variables.  -[unknown]

But Nature flies from the infinite, for the infinite is unending or imperfect, and Nature ever seeks an end.  -Aristotle

mathgogocart
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Intresting stuff

Hey.

## #5 2012-11-23 19:46:48

bob bundy
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### Re: Teach Pythagorean Theorem in 10 seconds

hi Bosworth.Joshua

Neat animation, thanks!

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #6 2013-01-07 12:48:27

21122012
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### Re: Teach Pythagorean Theorem in 10 seconds

"The conditions imposed on functions, become a source of difficulties which will manage to be avoided only by means of new researches about the principles of integral calculus"

Thomas Ioannes Stiltes. ...                                                 I made it!

## #7 2013-01-09 02:14:44

Fistfiz
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### Re: Teach Pythagorean Theorem in 10 seconds

Hi there! These are very simple and smart proofs. I suggest you also to give a look to:

http://farside.ph.utexas.edu/euclid/Elements.pdf
Book1, Prop.48, Prop.49

the second one (if i remember good) is the Inverse theorem (i.e. if a triangle is such that c²=a²+b², then it's rectangle).

30+2=28 (Mom's identity)

## #8 2013-01-09 05:59:29

bob bundy
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### Re: Teach Pythagorean Theorem in 10 seconds

hi Fistfiz

Thanks for that link.  That brings back memories.  I had to learn that proof many, many years ago.

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #9 2013-01-09 07:19:43

Fistfiz
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### Re: Teach Pythagorean Theorem in 10 seconds

You're welcome.

30+2=28 (Mom's identity)