It is currently 21 Nov 2017, 19:15

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

In Quadrilateral WXYZ, is XY perpendicular to YZ?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

1 KUDOS received
Manager
Manager
avatar
Joined: 25 Aug 2004
Posts: 170

Kudos [?]: 35 [1], given: 0

Location: MONTREAL
In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 07:18
1
This post received
KUDOS
11
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

46% (01:04) correct 54% (00:47) wrong based on 269 sessions

HideShow timer Statistics

In Quadrilateral WXYZ, is XY perpendicular to YZ?

(1) WXY is a right angle

(2) WZY is a right angle
[Reveal] Spoiler: OA

Kudos [?]: 35 [1], given: 0

Senior Manager
Senior Manager
avatar
Joined: 30 Oct 2004
Posts: 284

Kudos [?]: 70 [0], given: 0

Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 07:28
I get D) Either is sufficient to answer they are not perpendicular.
_________________

-Vikram

Kudos [?]: 70 [0], given: 0

Manager
Manager
avatar
Joined: 15 Jul 2005
Posts: 105

Kudos [?]: 9 [0], given: 0

Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 07:39
vikramm wrote:
I get D) Either is sufficient to answer they are not perpendicular.


How do you conclude XY is not perpendicular to YZ, by either of those statements??

my answer is (C).

... oops, maybe not also!

Last edited by chets on 16 Sep 2005, 14:26, edited 1 time in total.

Kudos [?]: 9 [0], given: 0

Senior Manager
Senior Manager
avatar
Joined: 04 May 2005
Posts: 278

Kudos [?]: 85 [0], given: 0

Location: CA, USA
Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 10:05
E

get a piece of paper (rectangle), tear it along the diagnal line to get two right triangles. Try to make a quad with their two right sides - you will get any number of non-rectangle quad (with two 90degree corners)

Kudos [?]: 85 [0], given: 0

Intern
Intern
avatar
Joined: 25 Jan 2005
Posts: 17

Kudos [?]: [0], given: 0

Location: Chicago
Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 11:36
Precisely, E it is.

Sum of 4 angles of a quad is 360. Two being 90, we cant say anything about the remaining two.
Or
Follow qpoo's suggestions. easy visualization.

Kudos [?]: [0], given: 0

Intern
Intern
avatar
Joined: 16 Jun 2005
Posts: 1

Kudos [?]: [0], given: 0

Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 14:40
mbassmbass04 wrote:
In Quadrilateral WXYZ, is XY perpendicular to YZ?

(1) WXY is a right angle

(2) WZY is a right angle


I think i should be C. If two opposite angles are 90 degrees in a quad, it has to be rectangle.
What is OA?

Kudos [?]: [0], given: 0

3 KUDOS received
Intern
Intern
avatar
Joined: 19 Aug 2005
Posts: 41

Kudos [?]: 4 [3], given: 0

Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 16 Sep 2005, 21:31
3
This post received
KUDOS
Agree with qpoo now. understood my mistake. it must be E. thanks qpoo. that was a great help...

i have drawn a quadrilateral to prove that. hope it'll help. [/img]
Attachments

WXYZ.doc [19 KiB]
Downloaded 363 times

To download please login or register as a user

Kudos [?]: 4 [3], given: 0

Manager
Manager
avatar
Joined: 25 Aug 2004
Posts: 170

Kudos [?]: 35 [0], given: 0

Location: MONTREAL
Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 17 Sep 2005, 10:59
It looks like the OA is E.

I personaly choose C first.

This is what is written in the answer...

If you choose to draw the quadrilateral, you must realize that you don't know whether it's regular shape as a parallelogram or whether it's a stranger shape, also when you label points do so clockwise. Statement 1 only tells about on angle so it's insufficient since the others could be anything. Statement 2 has the same problem. Together the statements don't resolve it because it could be a square or it could be a shape with angles 90,90,110 and 80 (try to draw this you will see its possible)

Kudos [?]: 35 [0], given: 0

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 15585

Kudos [?]: 283 [0], given: 0

Premium Member
Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 18 Jul 2015, 11:30
Hello from the GMAT Club BumpBot!

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.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Kudos [?]: 283 [0], given: 0

1 KUDOS received
Senior Manager
Senior Manager
User avatar
G
Joined: 19 Oct 2012
Posts: 335

Kudos [?]: 54 [1], given: 103

Location: India
Concentration: General Management, Operations
GMAT 1: 660 Q47 V35
GMAT 2: 710 Q50 V38
GPA: 3.81
WE: Information Technology (Computer Software)
CAT Tests
Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 23 Aug 2016, 21:57
1
This post received
KUDOS
Let me spell it via a diagram:

Image
_________________

Citius, Altius, Fortius

Kudos [?]: 54 [1], given: 103

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 15585

Kudos [?]: 283 [0], given: 0

Premium Member
Re: In Quadrilateral WXYZ, is XY perpendicular to YZ? [#permalink]

Show Tags

New post 21 Sep 2017, 10:31
Hello from the GMAT Club BumpBot!

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.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Kudos [?]: 283 [0], given: 0

Re: In Quadrilateral WXYZ, is XY perpendicular to YZ?   [#permalink] 21 Sep 2017, 10:31
Display posts from previous: Sort by

In Quadrilateral WXYZ, is XY perpendicular to YZ?

  new topic 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®.