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GMAT Prep Geometry

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ramesh.krish.85
 Post subject: GMAT Prep Geometry
 Post Posted: Wed Jan 27, 2010 12:37 pm 
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Students


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Image

If the image doesnt display above please click the following link
http://www.postimage.org/image.php?v=TsU9aaA

Please help me understand how to approach these kind of geometry problems. I have read the Manhattan Geometry stratergy guide and remeber the concepts but kinda getting confused which of the concepts to apply when.
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zchampz
 Post subject: Re: GMAT Prep Geometry
 Post Posted: Wed Jan 27, 2010 2:16 pm 
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What is the OA (Official Answer). As per the forum guidelines it would be great if you post official answer along with your question.

I guess the OA is A.
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ramesh.krish.85
 Post subject: Re: GMAT Prep Geometry
 Post Posted: Thu Jan 28, 2010 3:41 am 
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OA is A. Please help me understand how to approach this problem.
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agha79
 Post subject: Re: GMAT Prep Geometry
 Post Posted: Sat Jan 30, 2010 5:43 pm 
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Can someone from MGMAT please help?
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sanidhya510
 Post subject: Re: GMAT Prep Geometry
 Post Posted: Fri Feb 05, 2010 11:50 pm 
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the angle of x and y determine the lengths of line segments PQ and RS. thus if the angle x and angle y are equal the length of the line segments would be equal as PS and QR are parallel lines. Thus the only way to get a solution is by knowing if angle x and angle y are different , thus making sure that the lengths of line segments PQ and SR are different. Answer should be A.
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ramesh.krish.85
 Post subject: Re: GMAT Prep Geometry
 Post Posted: Mon Feb 08, 2010 1:21 pm 
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@sandhya: your explanations was very good. thanks. But I have a question

Quote:
the angle of x and y determine the lengths of line segments PQ and RS. thus if the angle x and angle y are equal the length of the line segments would be equal as PS and QR are parallel lines.


With the angle of x and y we cannot actually determine the length of the line segments PQ and RS. But since both line segments start from parllel points (P and S) and end at parllel points (Q and R) we can determine whether the line segments PQ and RS are equal based on the angles x and y.

Is my understanding right ? or is there any other generic way of applying this logic in other problems where one set of points(P and S) and another set of points (Q and R) are not parllel.
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RonPurewal
 Post subject: Re: GMAT Prep Geometry
 Post Posted: Mon Mar 08, 2010 7:47 am 
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this problem has been covered previously on the forum:

in-the-figure-above-if-x-and-y-are-each-less-than-90-and-ps-t3582.html
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