How many ways can four points be arranged in a plane so that the six distances between pairs of points take on only two different values?
I can't be certain what is meant by the question. What would consitute
a different arrangement? Or, expressing my puzzlement by means of an
apparently different question: If we had two suggested exampls of
arrangments, what features would any comparison between them have to
have in order for them to be said to be a different arrangement or
"way"? On some interpretation of the meaning (as illustrated by a
comment so far), the answer could be "an infinite number".
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Posted by David
on 2004-11-22 01:04:47 |