w00t! :-D

]]>trying to copy the diagram, I saw two same posts

(maybe, I thought I saw) of the diagram, to simplify,

I tried to delete one, and the entire post and got deleted.

I shall be much much more careful in the future,

and thanks for posting it before I requested you!

Nice question, brilliant reasoning.

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I am lousy in these kinds of things

Well, i get the same answer, but i was unable to prove that z=y

Please tell me how to prove

]]>Well maybe no one bothered to answer this because it was too easy. :-(

]]>w = 70 x = 90 y = 110 z = 110

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