Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 3001:30 AM EDT
-02:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2912:30 AM EDT
-01:30 AM EDT
Learn how Kamakshi achieved a GMAT 675 with an impressive 96th %ile in Data Insights. Discover the unique methods and exam strategies that helped her excel in DI along with other sections for a balanced and high score.
May 0111:00 AM PDT
-12:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
May 0306:30 AM PDT
-08:30 AM PDT
Verbal trouble on GMAT? Fix it NOW! Join Sunita Singhvi for a focused webinar on actionable strategies to boost your Verbal score and take your performance to the next level.
21 Apr 2019, 15:39
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
28% (02:22) correct
72%
(02:41)
wrong
based on 29
sessions
History
Date
Time
Result
Not Attempted Yet
In the figure shown below, what is the value of angle \(α\)?
A. 70°
B. 75°
C. 80°
D. 90°
E. The given information is not sufficient to answer this question
A. 70°
B. 75°
C. 80°
D. 90°
E. The given information is not sufficient to answer this question
21 Apr 2019, 18:44
Kudos
Bookmarks
lucajava
Please refer the enclosed diagram,
1) Sides AB=BD=BC=CD
2) Angle AOD=Angle BOC=70°
Now, in the triangle AOD, we have
a) \(α\)+Angle OAD=70°
b) In the triangle ABD, 20°+ \(α\)+ Angle OAD + 50°=180° Or, \(α\)+ Angle OAD=110°
By solving (a) and (b) we have, \(α\)=80°
Ans. (C)
Attachments
Picture.png [ 44.02 KiB | Viewed 3568 times ]
21 Apr 2019, 19:13
Kudos
Bookmarks
lucajava
STEP I : Take triangle ADC.
Angle DAC = 180-D-C=180-(20+60)-50=50, so ADC is isosceles and AD=CD.
STEP II : Take triangle BDC.
Angle DBC = 180-D-C=180-60-(50+10)=60, so BDC is equilateral triangle and BD=CD=BD.
STEP III : Compare AD and BD
Ad=CD and BD=CD, so AD=BD.
STEP IV : Take triangle ADB.
So ADB is isosceles as AD=BD.
Thus angle \(α\)=\(\angle{DAB}=\frac{180-20}{2}=80\)
C
Attachments
000000.png [ 43.07 KiB | Viewed 3483 times ]
