It is currently 20 Feb 2018, 15:42

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

gmat prep geometry ds

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
avatar
Joined: 01 Dec 2007
Posts: 52
gmat prep geometry ds [#permalink]

Show Tags

New post 02 Sep 2008, 02:50
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Image

correct is A

please tell me the approach to solve it.
SVP
SVP
avatar
Joined: 17 Jun 2008
Posts: 1529
Re: gmat prep geometry ds [#permalink]

Show Tags

New post 02 Sep 2008, 02:54
Triangle BDC is an isosceles triangle with BD = BC.

Now, angle BDC = angle BAD + angle ABD. Thus, angle ABD is also x making ABD an isosceles triangle with AD = DB.

Now 1 says AD = 6 that means DB = BC = 6. Sufficient.

2 gives only the measure of angle and hence insufficient.
Director
Director
User avatar
Joined: 12 Jul 2008
Posts: 514
Schools: Wharton
Re: gmat prep geometry ds [#permalink]

Show Tags

New post 02 Sep 2008, 03:10
blover wrote:
Image

correct is A

please tell me the approach to solve it.


Angle ADB = 180 - Angle BDC = 180 - 2x
Angle ABD = 180 - (180 - 2x) - (x) = x --> Triangle ADB is an isosceles triangle with AD = DB = 6

Because Triangle BDC is also an isosceles triangle with DB = BC, BC = 6.
Re: gmat prep geometry ds   [#permalink] 02 Sep 2008, 03:10
Display posts from previous: Sort by

gmat prep geometry ds

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.