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.
Jul 1508:00 PM PDT
-09:00 PM PDT
Full-length FE mock with insightful analytics, weakness diagnosis, and video explanations!
Jul 1609:30 AM EDT
-11:30 AM EDT
Is INSEAD your dream b-school and you're looking for solid prep and application strategies to get there? Check out Barkavi’s end-to-end journey to know how she did! Get insights into the INSEAD admissions process, know what Adcoms look at, and more!
Jul 0901:00 PM EDT
-02:00 PM EDT
More Target Test Prep students are earning 100th percentile GMAT scores. Don’t settle for less when the Target Test Prep course gives you everything you need to score high on the GMAT. Start your 5-day free trial today.- Jul 14
10:00 AM PDT
-11:59 PM PDT
GMAT Preparation Online - A limited time sale use code: EXPERTSGLOBAL10 
Jul 1611:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
Jul 1911:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment
21 Dec 2009, 13:11
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
44% (01:44) correct
56%
(01:48)
wrong
based on 264
sessions
History
Date
Time
Result
Not Attempted Yet
In triangle ABC, AB has a length of 10 and D is the midpoint of AB. What is the length of line segment DC?
(1) Angle C= 90
(2) Angle B= 45
(1) Angle C= 90
(2) Angle B= 45
21 Dec 2009, 13:44
Kudos
Bookmarks
chetan2u
can the pt mentioned abt property of right angle triangle be proven
Imagine the right triangle inscribed in circle. We know that if the right triangle is inscribed in circle, hypotenuse must be diameter, hence half of the hypotenuse is radius. The line segment from the third vertex to the center is on the on the one hand radius of the circle=half of the hypotenuse and on the other hand as it's connecting the vertex with the midpoint of the hypotenuse it's median too.
Attachment:
Math_Tri_inscribed.png [ 6.47 KiB | Viewed 13721 times ]
Hope it's clear.
General Discussion
21 Dec 2009, 13:26
Kudos
Bookmarks
chetan2u
In triangle ABC, AB has a length of 10 and D is the midpoint of AB. What is the length of line segment DC?
(1) Angle C= 90
(2) Angle B= 45
(1) Angle C= 90
(2) Angle B= 45
(1) We have right triangle ABC, with right angle at C. Property of right triangle: median from right angle is half of the hypotenuse, hence CD=AB/2=10/2=5. Sufficient.
(2) Clearly insufficient.
Answer: A.
