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Subject: "Diagonal of a square with side 5: not square root of 5"     Previous Topic | Next Topic
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Conferences The CTK Exchange Thoughts and Suggestions Topic #26
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Andy Gaus
guest
Nov-14-07, 04:45 PM (EST)
 
"Diagonal of a square with side 5: not square root of 5"
 
   On this page:
https://www.cut-the-knot.org/do_you_know/numbers.shtml#visualize
the discussion of irrational numbers speaks of the square root of 5 and derives it from a right triangle with sides of 2 and 1. Then it'says that an even simpler example involves a square with sides of 5 units. But the diagonal of such a square is 5 times the square root of 2. That's not an illustration of the square root of 5, is it?

Many thanks for this wonderful site. It's enormously stimulating.


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alexbadmin
Charter Member
2131 posts
Nov-14-07, 04:47 PM (EST)
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1. "RE: Diagonal of a square with side 5: not square root of 5"
In response to message #0
 
   Many thanks for the kind words and pointing out that awful error. Have no explanation for it.


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