BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

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.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Angle

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 392
Joined: Thu Jan 15, 2009 12:52 pm
Location: New Jersey
Thanked: 76 times

by truplayer256 » Fri Oct 23, 2009 4:54 pm
From the picture above, it's safe to assume that 2x+x=90 and x=30 degrees. Now, angle CED has angle C equal to 2x and angle D equal to 2x. So, if we substitute x=30, we get angle C is 60 degrees and angle D is 60 degrees. Hence, angle E is also 60 degrees.
Attachments
GMAT Math1.jpg
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 182
Joined: Sun Aug 02, 2009 7:19 pm
Thanked: 18 times
GMAT Score:680

by sanjana » Sat Oct 24, 2009 8:34 am
truplayer256 wrote:From the picture above, it's safe to assume that 2x+x=90 and x=30 degrees. Now, angle CED has angle C equal to 2x and angle D equal to 2x. So, if we substitute x=30, we get angle C is 60 degrees and angle D is 60 degrees. Hence, angle E is also 60 degrees.
It is safe to assume 2x+x=90 as the diagonals of a rectangle bisect eachother so BE=EA and since EBA=2X
EAB=2X
hence,2x+x=90
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 126
Joined: Wed Jun 24, 2009 1:12 pm
Location: Montreal
Thanked: 2 times
GMAT Score:510

by ssuarezo » Sat Oct 24, 2009 7:39 pm
truplayer256 wrote:From the picture above, it's safe to assume that 2x+x=90 and x=30 degrees. Now, angle CED has angle C equal to 2x and angle D equal to 2x. So, if we substitute x=30, we get angle C is 60 degrees and angle D is 60 degrees. Hence, angle E is also 60 degrees.
Thank u for your explanation
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 1161
Joined: Mon May 12, 2008 2:52 amFollowed by: 1 member
Location: Sydney
Thanked: 23 times

by mehravikas » Sat Oct 24, 2009 9:08 pm
@truplayer256,

Thanks for your explanation.

Can you please explain how angle C and D are equal to 2x?

Vikas
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 392
Joined: Thu Jan 15, 2009 12:52 pm
Location: New Jersey
Thanked: 76 times

by truplayer256 » Sun Oct 25, 2009 6:49 am
@truplayer256,

Thanks for your explanation.

Can you please explain how angle C and D are equal to 2x?

Vikas
Sure, if you look at the picture, you can clearly see that angle C is equal to angle B and angle D is equal to angle A. Since angle B equals 2x, angle C also equals 2x and the same goes for angle D.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 1161
Joined: Mon May 12, 2008 2:52 amFollowed by: 1 member
Location: Sydney
Thanked: 23 times

by mehravikas » Tue Oct 27, 2009 11:18 am
Thanks again.
truplayer256 wrote:
@truplayer256,

Thanks for your explanation.

Can you please explain how angle C and D are equal to 2x?

Vikas
Sure, if you look at the picture, you can clearly see that angle C is equal to angle B and angle D is equal to angle A. Since angle B equals 2x, angle C also equals 2x and the same goes for angle D.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1