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What is the angle between the 2 diagonals of the adjacent

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What is the angle between the 2 diagonals of the adjacent [#permalink]  22 Aug 2006, 08:10
What is the angle between the 2 diagonals of the adjacent faces of a cube?
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Re: Geometry problem help guys [#permalink]  22 Aug 2006, 08:32
apollo168 wrote:
What is the angle between the 2 diagonals of the adjacent faces of a cube?

I'd guess 90. Isn't this vector problem? Any math majors here should be able to help!
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Answer is 60 Driving me nuts
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apollo168 wrote:
Answer is 60 Driving me nuts

Now that you have given the ans, the solution strikes me as very obvious, but unfortunately thats not how GMAT works!

anyway imagine that diaognals of 3 adjacent sides of a cube form an equilateral triangle in a plane! viola!
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That could work hehe
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I see the light now
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