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# GMAT Prep Triangle

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Senior Manager
Joined: 20 Feb 2008
Posts: 292
Location: Bangalore, India
Schools: R1:Cornell, Yale, NYU. R2: Haas, MIT, Ross

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03 Nov 2008, 20:23
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Hi All,
Could you please provide an explanation for this question from the GMAT Prep. I guessed on this answer and would appreciate you explanation.
Also there is a website that u can use to convert your word doc into a url which you can imbedd into your post. Can someone suggest an appropriate website.
Thanks
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GMATPrep1Triangle.doc [115 KiB]

VP
Joined: 30 Jun 2008
Posts: 1019

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03 Nov 2008, 20:36
When you take a screen-shot, paste it in MS Paint and save it as jpeg.... upload your jpeg file just as you would your doc file ....

Here let us take angle ABD = y
we know from the diagram that angle ADB = 180 -2x

sum of angles in a triangle = 180
x + y + 180-2x = 180
y - x = 0
or x = y

this means that line AD = line BD ( isosceles triangle)
and we know from diagram that BD = BC ( isosceles triangle)

so if we know the length of AD or BD, we can determine the length of BC

Statement 1) AD = 6. Sufficient
Statement 2) Only angle provided. No info about any length. Insufficient.
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geometry.jpg [ 68.31 KiB | Viewed 843 times ]

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Senior Manager
Joined: 20 Feb 2008
Posts: 292
Location: Bangalore, India
Schools: R1:Cornell, Yale, NYU. R2: Haas, MIT, Ross

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05 Nov 2008, 21:14
Hey thanks alot!!!
Re: GMAT Prep Triangle   [#permalink] 05 Nov 2008, 21:14
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# GMAT Prep Triangle

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