It is currently 27 Jun 2017, 05:17

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Points A, B, and C form a triangle. Is angle ABC > 90

Author Message
VP
Joined: 22 Nov 2007
Posts: 1080
Points A, B, and C form a triangle. Is angle ABC > 90 [#permalink]

### Show Tags

24 Feb 2008, 12:44
2
KUDOS
1
This post was
BOOKMARKED
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Points A, B, and C form a triangle. Is angle ABC > 90 degrees?
1. AC = AB + BC - 0.001
2. AC = AB
SVP
Joined: 29 Aug 2007
Posts: 2473

### Show Tags

25 Feb 2008, 01:06
marcodonzelli wrote:
Points A, B, and C form a triangle. Is angle ABC > 90 degrees?
1. AC = AB + BC - 0.001
2. AC = AB

B. in 2, abc cannot be > 90.
in 1, it can or cannot be.
_________________

Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html

GT

CEO
Joined: 17 Nov 2007
Posts: 3584
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40

### Show Tags

25 Feb 2008, 01:53
B

a good one (+1)

1. AC = AB + BC - 0.001 : angle ABC is (0,180). insufficient
2. AC = AB : angle ABC is (0,90). sufficient
_________________

HOT! GMAT TOOLKIT 2 (iOS) / GMAT TOOLKIT (Android) - The OFFICIAL GMAT CLUB PREP APP, a must-have app especially if you aim at 700+ | PrepGame

Director
Joined: 05 Jan 2008
Posts: 688

### Show Tags

25 Feb 2008, 02:25
Walker,

If AC = AB : angle ABC is (0,90). sufficient How?

regards,
Pras
_________________

Persistence+Patience+Persistence+Patience=G...O...A...L

CEO
Joined: 17 Nov 2007
Posts: 3584
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40

### Show Tags

25 Feb 2008, 09:05
prasannar wrote:
Walker,

If AC = AB : angle ABC is (0,90). sufficient How?

regards,
Pras

Is angle ABC > 90 degrees? No, because the angle is less 90. Therefore, information is sufficient to answer the question.
Hope this help
_________________

HOT! GMAT TOOLKIT 2 (iOS) / GMAT TOOLKIT (Android) - The OFFICIAL GMAT CLUB PREP APP, a must-have app especially if you aim at 700+ | PrepGame

CEO
Joined: 29 Mar 2007
Posts: 2559

### Show Tags

26 Feb 2008, 09:11
marcodonzelli wrote:
Points A, B, and C form a triangle. Is angle ABC > 90 degrees?
1. AC = AB + BC - 0.001
2. AC = AB

Just draw out the triangle.

S1: No help here.

S2:

Ul see that Angle ABC is equal to one of the other angles. We cannot have ABC >90* no matter what we do to the other angles b/c its equal to one of the other angles.

B
Re: Tricky geo   [#permalink] 26 Feb 2008, 09:11
Display posts from previous: Sort by