DS- Parallegram, Kites, rhombus, quads etc Q3

Expert replies

kaps786: Senior | Next Rank: 100 Posts; Posts: 52; Joined: Sat Aug 13, 2011 8:34 am; Thanked: 2 times

by kaps786 » Thu Aug 18, 2011 6:32 am

Is the quadilateral a rectangle ?

1) Two of the sides measure 6 long and 2 of them measure 8 long.

2) the diagonals are perpendicular to each other.

Dont know OA..

Same thing as earlier post, if you can help explain the concepts of the various figures that should be known to handle these question types...

thanks

Like this post

Source: Beat The GMAT — Data Sufficiency | Thu Aug 18, 2011 6:32 am

arashyazdiha: Master | Next Rank: 500 Posts; Posts: 102; Joined: Tue Mar 08, 2011 3:42 am; Thanked: 2 times

by arashyazdiha » Thu Aug 18, 2011 10:50 am

Hi,
Let's go on with the statements:
1) Two of the sides measure 6 long and 2 of them measure 8 long:
This one alone could be a rectangle or a trapezoid or still a quadrilateral with two equal sides adjacent.((not sufficient))

2) the diagonals are perpendicular to each other:
This one alone could be a square(some sort of rectangle then) or a rhombus.(not sufficient)

Now let's consider both of them together:
If the sides are not equal according to part one, then it could not be a square described in part two. And because the diagonals are perpendicular to each other, it should be an unknown quadrilateral which the pairs of equal sides, appear adjacent. The only rectangle with perpendicular diagonals is a square. So the answer is No regarding both statements together.(sufficient)

Always be aware of these No answers, they sometimes try to deliver unconsciously a non-sufficient answer.
I hope it can help
bests

Like this post

varungoel: Junior | Next Rank: 30 Posts; Posts: 10; Joined: Mon Sep 12, 2011 7:24 pm

by varungoel » Sun Sep 25, 2011 4:37 pm

So are you saying it is a rhombus after looking at both A & B and not a rectangle?

I would pick C as the answer if I saw this on the exam, but I would think it was a rectangle.

Like this post

GMAT/MBA Expert

Anurag@Gurome: GMAT Instructor; Posts: 3835; Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members; Location: Milpitas, CA; Thanked: 1854 times; GMAT Score:770

by Anurag@Gurome » Mon Sep 26, 2011 5:40 am

kaps786 wrote:Is the quadilateral a rectangle ?

1) Two of the sides measure 6 long and 2 of them measure 8 long.

2) the diagonals are perpendicular to each other.

Dont know OA..

Same thing as earlier post, if you can help explain the concepts of the various figures that should be known to handle these question types...

thanks

(1) Two of the sides measure 6 long and 2 of them measure 8 long implies it can be rectangle, trapezoid, or a kite; NOT sufficient.

(2) The diagonals are perpendicular to each other implies it could be a rhombus or a square or a kite; NOT sufficient.

Combining (1) and (2), we know that the quadrilateral is not a rectangle as in a rectangle diagonals do not bisect at 90 degrees. So, the answer to the main question is "no".

The correct answer is C.

Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/

Like this post

varungoel: Junior | Next Rank: 30 Posts; Posts: 10; Joined: Mon Sep 12, 2011 7:24 pm

by varungoel » Mon Sep 26, 2011 8:25 am

Thanks Anurag.

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review