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# DS: triangle

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Senior Manager
Joined: 19 Mar 2008
Posts: 344

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07 Sep 2008, 23:59
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In Triangle ABC above, what is the length of side BC?

(1) Line Segment AD has length 6
(2) x = 36

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VP
Joined: 17 Jun 2008
Posts: 1476

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08 Sep 2008, 00:28
Can't see the image.....Can you please attach?
VP
Joined: 17 Jun 2008
Posts: 1476

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08 Sep 2008, 00:36
I will go for E.

As per the diagram, BDC is an isosceles triangle. However, it is not known what ABD is.
Senior Manager
Joined: 19 Mar 2008
Posts: 344

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08 Sep 2008, 00:51
OA is A.

Pls find it out from OG11, page 157, Question 117
SVP
Joined: 07 Nov 2007
Posts: 1731
Location: New York

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08 Sep 2008, 07:33
judokan wrote:
OA is A.

Pls find it out from OG11, page 157, Question 117

I beleive angle BAD is x, which is missing in the diagram.

In that case.. answer would be A.
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Manager
Joined: 28 Aug 2008
Posts: 95

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08 Sep 2008, 12:35
Yeah, we are missing a crucial element of the question here.

Agree with the above ( A ... if angle BAD is x)
Intern
Joined: 23 May 2008
Posts: 47

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08 Sep 2008, 15:52
judokan wrote:
OA is A.

Pls find it out from OG11, page 157, Question 117

I don't see it here, are you sure that is the right reference?
Retired Moderator
Joined: 18 Jul 2008
Posts: 897

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08 Sep 2008, 16:10
What is the explanation of why A) is sufficient please?
Senior Manager
Joined: 19 Mar 2008
Posts: 344

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08 Sep 2008, 19:10
snowbirdskier wrote:
judokan wrote:
OA is A.

Pls find it out from OG11, page 157, Question 117

I don't see it here, are you sure that is the right reference?

Sorry, i t should be in the green book. OG Quantitative Review. page no. is correct.
Director
Joined: 23 Sep 2007
Posts: 761

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08 Sep 2008, 21:10
thanks, just wasted 10 minutes trying this problem, and another 2 minutes looking for it in the wrong references

this is question #226 in OG10
Manager
Joined: 09 Jul 2007
Posts: 235

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08 Sep 2008, 22:20

Otherwise it is E.
Retired Moderator
Joined: 18 Jul 2008
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09 Sep 2008, 06:41
SVP
Joined: 07 Nov 2007
Posts: 1731
Location: New York

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09 Sep 2008, 06:44

say ABD=y

x+y+180-2x=180
--> x=y = ABD

So ABD isosceles triangle
BDC is isoceles triangle..
so BD=BC=6

SUFFICIENT.

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Re: DS: triangle &nbs [#permalink] 09 Sep 2008, 06:44
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