# Pythagoras

Discussion in 'Mathematics' started by pipipi, Mar 22, 2011.

1. ### pipipiNew commenter

you have mail

2. ### bbibblerNew commenter

Modern builders use a 3,4,5 triangle to product right angles. At least my father used to do this, he had no idea why it worked.

A very interesting homework would be for the class to research why it is called Pythagoras,

Is it Plimton 322 and I remember the number 247 in relation to Egyption proofs that predate the Greek.

3. ### Polecat

Plimpton 322 is a cuneiform tablet (so Babylonian) essentially listing a load of Pythagorean triples. That doesn't mean to say that the Babylonians knew of or could prove Pythagoras' theorem in the geometric sense.
I was once told that scaffolders use the 3-4-5 triangle to create right-angles. The builders next door are not using that method!

4. ### Vince_UlamStar commenter

May I ask, did you come at all to any satisfactory or useful conclusion?

5. ### mathsteacher1953

One of our PE teachers wanted to mark out a right angle on the playing fields so he used a 4,5,6 triangle!!!!!!!
A little knowledge is a dangerous thing!

No

8. ### bbibblerNew commenter

It is on my list of things to do before I die.

After I have solved all problems invovled with attribution of presedence of mathematical ideas, I will move on to trying to understand WTH Becks is talking about today.

9. ### Vince_UlamStar commenter

Who knows WTH she&rsquo;s ever on about. There are some amusingly pitiful moments, such as the recent Yosser Hughes posts in one of the ACME discussions, but this week it&rsquo;s more alarming, chiefly something to do with horse-fiddling and knives as you have seen in post 234:
<u><font size="2" color="#0000ff"><u><font size="2" color="#0000ff">https://community.tes.co.uk/forums/p/470130/6635169.aspx</font></u>
</font></u><font size="2">Do you think it possible that she&rsquo;s an ardent, even rampant fan of Equus, the controversial play by Peter Shaffer?
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10. ### pipipiNew commenter

anything controversial would attract her

11. ### Betamale

Oh come on, be fair. You should have been happy to find one who can count up to 6.
Most football scores only read 3 or 4 nil at best.
Hearing one say a shuttle *** was unpredictable becuase it was tringle shape is about as good as it has got in my time