It is currently 15 Jan 2018, 23:57

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

The figure above is a cube. What is the measure of angle BEG

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

Hide Tags

2 KUDOS received
Director
Director
User avatar
Status: No dream is too large, no dreamer is too small
Joined: 14 Jul 2010
Posts: 600

Kudos [?]: 1187 [2], given: 39

The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 18 Jan 2012, 10:39
2
This post received
KUDOS
12
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

53% (00:34) correct 47% (00:44) wrong based on 287 sessions

HideShow timer Statistics

Image
The figure above is a cube. What is the measure of angle BEG (not shown)?

A. 30°
B. 45°
C. 60°
D. 75°
E. 90°


[Reveal] Spoiler:
Attachment:
Cube.jpg
Cube.jpg [ 21.46 KiB | Viewed 7144 times ]
[Reveal] Spoiler: OA

_________________

Collections:-
PSof OG solved by GC members: http://gmatclub.com/forum/collection-ps-with-solution-from-gmatclub-110005.html
DS of OG solved by GC members: http://gmatclub.com/forum/collection-ds-with-solution-from-gmatclub-110004.html
100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html
Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html
Mixture problems in a file with best solutions: http://gmatclub.com/forum/mixture-problems-with-best-and-easy-solutions-all-together-124644.html

Kudos [?]: 1187 [2], given: 39

Expert Post
3 KUDOS received
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43292

Kudos [?]: 139136 [3], given: 12776

The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 18 Jan 2012, 10:47
3
This post received
KUDOS
Expert's post
3
This post was
BOOKMARKED
Baten80 wrote:
Image

The figure above is a cube. What is the measure of angle BEG (not shown)?

A. 30°
B. 45°
C. 60°
D. 75°
E. 90°


Note that triangle BEG is equilateral: it's made by the diagonals of the adjacent faces of the given cube (and as faces of a cube are squares its diagonals are equal). Thus angle BEG=60 degrees.

Answer: C.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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?
Extra-hard Quant Tests with Brilliant Analytics

Kudos [?]: 139136 [3], given: 12776

Senior Manager
Senior Manager
avatar
Status: D-Day is on February 10th. and I am not stressed
Affiliations: American Management association, American Association of financial accountants
Joined: 12 Apr 2011
Posts: 251

Kudos [?]: 388 [0], given: 52

Location: Kuwait
Schools: Columbia university
Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 19 Jan 2012, 10:42
Since triangle BEG is made of the diagonals for equale squares then the measures of < B, <E and ,<G are all equal. keep in mind that since all angles are equal then their sum has to equal 180. so, 180/3=60
_________________

Sky is the limit

Kudos [?]: 388 [0], given: 52

Manager
Manager
User avatar
G
Status: Quant Expert Q51
Joined: 02 Aug 2014
Posts: 65

Kudos [?]: 58 [0], given: 15

Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 04 Nov 2016, 23:29
BE and EG and BG are all diagonals for the square of a cube. So they are equal in length. so EBG is an equilateral triangle. so all the angles in this triangle are equal to 60 degre.

So Answer C
_________________

My GMAT DATA SUFFICIENCY Course on UDEMY

Kudos [?]: 58 [0], given: 15

Manager
Manager
avatar
B
Joined: 08 Oct 2016
Posts: 52

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

Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 05 Nov 2016, 01:35
I don't understand this question. Where is there a triangle/an angle for BEG?

Posted from my mobile device

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

Expert Post
1 KUDOS received
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43292

Kudos [?]: 139136 [1], given: 12776

Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 05 Nov 2016, 01:44
1
This post received
KUDOS
Expert's post
gillyelephant wrote:
I don't understand this question. Where is there a triangle/an angle for BEG?

Posted from my mobile device


Image

Note that triangle BEG is equilateral: it's made by the diagonals of the adjacent faces of the given cube (and as faces of a cube are squares its diagonals are equal). Thus angle BEG=60 degrees.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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?
Extra-hard Quant Tests with Brilliant Analytics

Kudos [?]: 139136 [1], given: 12776

Expert Post
1 KUDOS received
SVP
SVP
User avatar
G
Joined: 08 Jul 2010
Posts: 1904

Kudos [?]: 2467 [1], given: 51

Location: India
GMAT: INSIGHT
WE: Education (Education)
Reviews Badge
Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 05 Nov 2016, 03:51
1
This post received
KUDOS
Expert's post
Baten80 wrote:
Attachment:
The attachment Cube.jpg is no longer available

The figure above is a cube. What is the measure of angle BEG (not shown)?
A. 30°
B. 45°
C. 60°
D. 75°
E. 90°



Please find the solution as attached
Attachments

File comment: www.GMATinsight.com
Answer 3.jpg
Answer 3.jpg [ 58.96 KiB | Viewed 2163 times ]


_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

Kudos [?]: 2467 [1], given: 51

Expert Post
Target Test Prep Representative
User avatar
S
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 1820

Kudos [?]: 1043 [0], given: 5

Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 07 Nov 2016, 16:19
Baten80 wrote:
Attachment:
Cube.jpg

The figure above is a cube. What is the measure of angle BEG (not shown)?
A. 30°
B. 45°
C. 60°
D. 75°
E. 90°


Since our given figure is a cube, we must recall that a cube is made up of 6 squares, which of course have all equal sides. We need to determine the measure of angle BEG. Let’s draw that angle in a diagram:

Image

From our diagram we can see that we can actually create a triangle using angle BEG with sides BE, EG, and GB. Notice that each side is the diagonal of a square face of the cube and thus is equal in length. Therefore, we know that triangle BEG is an equilateral triangle and furthermore that angle BEG is 60 degrees.

Answer: C
_________________

Jeffery Miller
Head of GMAT Instruction

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Kudos [?]: 1043 [0], given: 5

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 14279

Kudos [?]: 291 [0], given: 0

Premium Member
Re: The figure above is a cube. What is the measure of angle BEG [#permalink]

Show Tags

New post 26 Dec 2017, 12:31
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 [?]: 291 [0], given: 0

Re: The figure above is a cube. What is the measure of angle BEG   [#permalink] 26 Dec 2017, 12:31
Display posts from previous: Sort by

The figure above is a cube. What is the measure of angle BEG

  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®.