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14 Feb 2011, 18:32
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C
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Difficulty:
35%
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Question Stats:
82% (01:39) correct
18%
(02:45)
wrong
based on 22
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Given rectangle ABCD (attached below), what is the value of angle DEC?
1) AD = AE
2) CE/BE = 2
1) AD = AE
2) CE/BE = 2
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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14 Feb 2011, 19:06
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Answer is C:
From (1) we have angle AED = angle ADE = 45 degrees, but we can't figure out angle BEC, and angle DEC. S Insuff.
From (2), we can see that triangle CEB is 30-60-90 right triangle. So angle BEC = 60. However, nothing known about angle AED and angle DEC.
From (1) and (2) though, angle AED + angle DEC + angle BEC = 180. So sufficient.
From (1) we have angle AED = angle ADE = 45 degrees, but we can't figure out angle BEC, and angle DEC. S Insuff.
From (2), we can see that triangle CEB is 30-60-90 right triangle. So angle BEC = 60. However, nothing known about angle AED and angle DEC.
From (1) and (2) though, angle AED + angle DEC + angle BEC = 180. So sufficient.
25 Aug 2016, 12:01
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Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
