Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

Geometry - Triangles / Circles

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 70
Joined: Mon Oct 05, 2009 9:33 am
by chipbmk » Tue Oct 27, 2009 4:14 pm
Can someone please tell me how to solve this problem?

I have tried numerous times and cannot seem to get it.

Thanks!
You do not have the required permissions to view the files attached to this post.
Top
Join the discussion
Source: — Problem Solving |
Senior | Next Rank: 100 Posts
Posts: 73
Joined: Wed Jul 22, 2009 6:46 pm
Location: Buffalo

by hongwang9703 » Tue Oct 27, 2009 5:43 pm
are those answers right? ps. are they gmatprep practice exam questions? or are they mgmat?
i got utterly defeated by the gmat.
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 70
Joined: Mon Oct 05, 2009 9:33 am

by chipbmk » Tue Oct 27, 2009 7:05 pm
hongwang9703 wrote:are those answers right? ps. are they gmatprep practice exam questions? or are they mgmat?
The answer choice chosen is incorrect.

I had guessed at that answer, as I did not know how to do it.

Upon trying this problem later, I was able to prove statement #2, but unable to prove Statement #1.

The correct answer choice is D.
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 73
Joined: Wed Jul 22, 2009 6:46 pm
Location: Buffalo

by hongwang9703 » Tue Oct 27, 2009 9:09 pm
think might have came up with something

there is a semi circle, therefore it is 180 degrees
angle COD is 60, therefore, angle AOC has to be 120.

Since Oc = BO = AB are equal (radius)
angle BAO = angle BCO

im not sure if this is right
i got utterly defeated by the gmat.
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 70
Joined: Mon Oct 05, 2009 9:33 am

by chipbmk » Wed Oct 28, 2009 6:48 am
hongwang9703 wrote:think might have came up with something

there is a semi circle, therefore it is 180 degrees
angle COD is 60, therefore, angle AOC has to be 120.

Since Oc = BO = AB are equal (radius)
angle BAO = angle BCO

im not sure if this is right
Even if angle BAO = angle BCO, given statement 2 alone. You do not know the degree of BCO do you?
Top
Join the discussion