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Date: Thu, 20 Dec 2012 00:43:01 +0100
From: Georg Bauhaus <rm.dash-bauhaus@futureapps.de>
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Subject: Re: Ada Tutor: Outside Assignment 2 - Question to the Solution
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Date: 2012-12-20T00:43:00+01:00
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On 20.12.12 00:18, Cedric wrote:
> You must have realized by now that it's impossible to draw a triangle with sides 1, 2, and 3.  The sum of any two sides must be greater than the third.
>
> What is the exact mathematic definition of a triangle? My last math course a quick a while ago:(
>
> I would assume that a triangle formed by 1, 2 and 3 would give a valid triangle. Why should that not be the case?

(It has helped me, and, in fact, a few kids I know if you don't mind,
to represent these abstract lengths (if that's what they are) as steps
a man can walk. If one person walks for 1 step, then 2 ... how far
would this person have got in steps? What about some other person
taking three steps on a straight line?
If you flattened the two shorter paths by "bending" them towards
the 3-step path, what happens?)