Find all School-related info fast with the new School-Specific MBA Forum

It is currently 01 Aug 2014, 22:39

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Is quadrilateral Q a square?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 11 May 2007
Posts: 108
Followers: 1

Kudos [?]: 12 [0], given: 0

Is quadrilateral Q a square? [#permalink] New post 28 Nov 2007, 14:19
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

64% (01:25) correct 36% (00:27) wrong based on 129 sessions
Is quadrilateral Q a square?

(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length
[Reveal] Spoiler: OA
Expert Post
CEO
CEO
User avatar
Joined: 17 Nov 2007
Posts: 3606
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Followers: 352

Kudos [?]: 1699 [0], given: 354

GMAT ToolKit User GMAT Tests User Premium Member
 [#permalink] New post 28 Nov 2007, 14:40
Expert's post
С. only both can let us a square.
Expert Post
CEO
CEO
User avatar
Joined: 17 Nov 2007
Posts: 3606
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Followers: 352

Kudos [?]: 1699 [0], given: 354

GMAT ToolKit User GMAT Tests User Premium Member
 [#permalink] New post 28 Nov 2007, 15:05
Expert's post
yogachgolf wrote:
why 'a' is insuff?


you can imagine four sticks with same length that are pinned by hinges. you can easily transform the square to a different rhombuses and even to a line.
CEO
CEO
User avatar
Joined: 29 Mar 2007
Posts: 2593
Followers: 16

Kudos [?]: 181 [0], given: 0

GMAT Tests User
Re: Square [#permalink] New post 28 Nov 2007, 15:24
yogachgolf wrote:
Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length


C

Here il post u a drawing.
Attachments

DS Geometry.doc [232 KiB]
Downloaded 96 times

To download please login or register as a user

SVP
SVP
User avatar
Joined: 06 Sep 2013
Posts: 1629
Location: United States
Concentration: Finance
GMAT 1: 710 Q48 V39
WE: Corporate Finance (Investment Banking)
Followers: 10

Kudos [?]: 139 [0], given: 254

GMAT ToolKit User
Re: [#permalink] New post 25 Oct 2013, 05:35
shubhampandey wrote:
yogachgolf wrote:
walker wrote:
С. only both can let us a square.


why 'a' is insuff?


Because it can be a parellogram or rhombus..


In a parallelogram, not all the sides have the same length from what I understand.
Or am I missing something?
Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18861
Followers: 3279

Kudos [?]: 22985 [1] , given: 2653

Re: Re: [#permalink] New post 25 Oct 2013, 07:28
1
This post received
KUDOS
Expert's post
jlgdr wrote:
shubhampandey wrote:
yogachgolf wrote:
Is quadrilateral Q a square?

(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length

In a parallelogram, not all the sides have the same length from what I understand.
Or am I missing something?


Parallelogram CAN have all 4 sides of equal length.

Parallelogram A quadrilateral with two pairs of parallel sides.
Image
Properties and Tips
• Opposite sides of a parallelogram are equal in length.
• Opposite angles of a parallelogram are equal in measure.

• Opposite sides of a parallelogram will never intersect.
• The diagonals of a parallelogram bisect each other.
• Consecutive angles are supplementary, add to 180°.
The area, A, of a parallelogram is A = bh, where b is the base of the parallelogram and h is its height.
• The area of a parallelogram is twice the area of a triangle created by one of its diagonals.

A parallelogram is a quadrilateral with opposite sides parallel and congruent. It is the "parent" of some other quadrilaterals, which are obtained by adding restrictions of various kinds:
• A rectangle is a parallelogram but with all angles fixed at 90°
• A rhombus is a parallelogram but with all sides equal in length
• A square is a parallelogram but with all sides equal in length and all angles fixed at 90°

For other properties check polygons chapter of Math Book: math-polygons-87336.html
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
avatar
Joined: 10 Mar 2014
Posts: 87
Followers: 1

Kudos [?]: 0 [0], given: 6

Re: Re: [#permalink] New post 15 Apr 2014, 00:10
HI Bunnel,

As you have mentioned that Parallelogram can have four sides equal then definitely its diagonals are also equal and it will become square. why A is not right?
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18861
Followers: 3279

Kudos [?]: 22985 [0], given: 2653

Re: Re: [#permalink] New post 15 Apr 2014, 00:19
Expert's post
pawankumargadiya wrote:
HI Bunnel,

As you have mentioned that Parallelogram can have four sides equal then definitely its diagonals are also equal and it will become square. why A is not right?


If a parallelogram has equal sides it is a rhombus but rhombus is not necessary to have equal diagonals, or in other words not all rhombuses are squares:
Image

Hope it's clear.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Senior Manager
Senior Manager
User avatar
Joined: 17 Sep 2013
Posts: 289
Location: United States
Concentration: Marketing, Strategy
GMAT Date: 04-30-2014
GPA: 3.24
WE: Analyst (Consulting)
Followers: 3

Kudos [?]: 37 [0], given: 98

GMAT ToolKit User
Re: Is quadrilateral Q a square? [#permalink] New post 05 Jun 2014, 02:43
A is insufficient cause rhombus is a quadrilateral with four sides & diagonals of dfferent lengths
B is insufficient cause a uniform Trapezoid has both the diagonals equal..

C is sufficient as trapezoid and rhombus are both eliminated.Hence a square
_________________

Appreciate the efforts...KUDOS for all

Senior Manager
Senior Manager
User avatar
Joined: 17 Sep 2013
Posts: 289
Location: United States
Concentration: Marketing, Strategy
GMAT Date: 04-30-2014
GPA: 3.24
WE: Analyst (Consulting)
Followers: 3

Kudos [?]: 37 [0], given: 98

GMAT ToolKit User
Re: Square [#permalink] New post 05 Jun 2014, 02:45
GMATBLACKBELT wrote:
yogachgolf wrote:
Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length


C

Here il post u a drawing.


This is an incorrect explanation cause a hexagon is not a quadrilateral and instead a uniform trapezium or a rectangle is a better alternative
_________________

Appreciate the efforts...KUDOS for all


Last edited by JusTLucK04 on 05 Jun 2014, 04:20, edited 1 time in total.
Manager
Manager
User avatar
Joined: 20 Dec 2013
Posts: 113
Followers: 1

Kudos [?]: 38 [0], given: 1

Re: Is quadrilateral Q a square? [#permalink] New post 05 Jun 2014, 02:50
yogachgolf wrote:
Is quadrilateral Q a square?

(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length



Statement I is insufficient:

Rhombus have same lengths and so does a square.

Statement II is insufficient:

Sides may or may not be same.

Combining is sufficient:

If sides are same and diagonals are same which means all the sides must intersect at ninety degrees hence answer is c.
_________________

Perfect Scores

If you think our post was valuable then please encourage us with Kudos :)

To learn GMAT for free visit:

http://Perfect-Scores.com
http://Youtube.com/PerfectScores
http://Facebook.com/PerfectScores

Re: Is quadrilateral Q a square?   [#permalink] 05 Jun 2014, 02:50
    Similar topics Author Replies Last post
Similar
Topics:
Is quadrilateral Q a square? sujayb 3 22 Oct 2006, 14:45
Is quadrilateral Q a square? (1) The sides of Q have the hkm_gmat 12 11 Jan 2006, 12:33
Is quadrilateral Q a square? (1) The sides of Q have the ritledge 1 09 Apr 2005, 07:38
Is quadrilateral Q a square? (1) The sides of Q have the Dr_Friedrich 6 20 Jan 2005, 13:32
Is quadrilateral Q a square? (1) The sides of Q have the ruhi 5 19 Nov 2004, 05:07
Display posts from previous: Sort by

Is quadrilateral Q a square?

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.