In parallelogram ABCD , what is the measure of ∠ADC? : GMAT Data Sufficiency (DS)
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

It is currently 10 Dec 2016, 03:47
GMAT Club Tests

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In parallelogram ABCD , what is the measure of ∠ADC?

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

Hide Tags

1 KUDOS received
Intern
Intern
User avatar
Joined: 25 Mar 2013
Posts: 6
Schools: INSEAD, LBS '14, ISB '14
GMAT 1: 730 Q49 V42
Followers: 7

Kudos [?]: 12 [1] , given: 2

In parallelogram ABCD , what is the measure of ∠ADC? [#permalink]

Show Tags

New post 04 Apr 2013, 02:03
1
This post received
KUDOS
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

84% (01:35) correct 16% (00:30) wrong based on 125 sessions

HideShow timer Statistics

Attachment:
ABCD.png
ABCD.png [ 2.53 KiB | Viewed 4687 times ]
In parallelogram ABCD , what is the measure of ∠ADC?

(1) The measure of ∠ABC is greater than 90
(2) The measure of ∠BCD is 70
[Reveal] Spoiler: OA

Last edited by Bunuel on 04 Apr 2013, 02:53, edited 1 time in total.
Renamed the topic and edited the question.
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 35932
Followers: 6862

Kudos [?]: 90109 [0], given: 10413

Re: In parallelogram ABCD , what is the measure of ∠ADC? [#permalink]

Show Tags

New post 04 Apr 2013, 02:58
Image
In parallelogram ABCD , what is the measure of ∠ADC?

(1) The measure of ∠ABC is greater than 90/ Clearly insufficient.

(2) The measure of ∠BCD is 70. Usefull propery: the adjacent angles of a parallelogram are supplementary (supplementary angles are two angles that add up to 180°), so ∠BCD + ∠ADC = 180 --> 70 + ∠ADC =180 --> ∠ADC = 110. Sufficient.

Answer: B.

For more on polygons check Polygons chapter of Math Book: math-polygons-87336.html

Similar questions to practice:
the-ratio-of-the-adjacent-angles-of-a-parallelogram-is-149152.html
in-the-figure-above-if-pqrs-is-a-parallelogram-then-y-x-140729.html

Also, please read carefully and follow: rules-for-posting-please-read-this-before-posting-133935.html Please pay attention to the rule #3. Thank you.
_________________

New to the Math Forum?
Please read this: 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

Intern
Intern
avatar
Joined: 27 Mar 2013
Posts: 3
Location: India
Schools: Stern '15
WE: Web Design (Computer Software)
Followers: 0

Kudos [?]: 9 [0], given: 4

Re: In parallelogram ABCD , what is the measure of ∠ADC? [#permalink]

Show Tags

New post 04 Apr 2013, 03:31
lovejyot wrote:
Attachment:
ABCD.png
In parallelogram ABCD , what is the measure of ∠ADC?

(1) The measure of ∠ABC is greater than 90
(2) The measure of ∠BCD is 70


from, st(1) more thn one possibilities ...pls read properties of parallelogram...
from st(2) it is clear tht ∠BCD + ∠ADC = 180 , so we get ∠ADC
i think , from st(2) we can answer ths Qs!
B
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 09 Sep 2013
Posts: 12905
Followers: 563

Kudos [?]: 158 [0], given: 0

Premium Member
Re: In parallelogram ABCD , what is the measure of ∠ADC? [#permalink]

Show Tags

New post 09 Dec 2014, 06:15
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

Expert Post
Optimus Prep Instructor
User avatar
Joined: 06 Nov 2014
Posts: 1740
Followers: 50

Kudos [?]: 378 [0], given: 21

Re: In parallelogram ABCD , what is the measure of ∠ADC? [#permalink]

Show Tags

New post 23 Dec 2014, 21:39
lovejyot wrote:
Attachment:
ABCD.png
In parallelogram ABCD , what is the measure of ∠ADC?

(1) The measure of ∠ABC is greater than 90
(2) The measure of ∠BCD is 70



(1) This leads to several possible answers, hence insufficient.

(2) ∠BCD + ∠ADC = 180 As we already know that the first one is 70, the second is 180-70. Thus, sufficient.

In order to get clarity on such questions, we have a targeted quant course for candidates preparing for the GMAT. You can find more details here:
http://www.optimus-prep.com/gmat-quant-booster
You can also opt for a well rounded course catering to all the needs of GMAT prep: http://www.optimus-prep.com/gmat-on-demand-course

Feel free to take a 7 day trial of the courses we offer.
_________________

Janielle Williams

Customer Support

Special Offer: $80-100/hr. Online Private Tutoring
GMAT On Demand Course $299
Free Online Trial Hour

Re: In parallelogram ABCD , what is the measure of ∠ADC?   [#permalink] 23 Dec 2014, 21:39
    Similar topics Author Replies Last post
Similar
Topics:
What is the measure, in degrees, of angle BCA in quadrilateral ABCD? felippemed 6 21 Nov 2016, 11:00
2 In quadrilateral ABCD, what is the value of angle ADC? minwoswoh 1 13 Dec 2014, 15:50
53 Experts publish their posts in the topic In the picture, quadrilateral ABCD is a parallelogram and enigma123 11 07 Feb 2012, 15:32
8 Experts publish their posts in the topic What is the area of parallelogram ABCD ? Knesl 14 05 Apr 2011, 14:41
13 Experts publish their posts in the topic What is the area of parallelogram ABCD ? tkarthi4u 20 04 Oct 2009, 07:30
Display posts from previous: Sort by

In parallelogram ABCD , what is the measure of ∠ADC?

  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 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®.