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

Redeem
Logan Thompson, Target Test Prep LiveTeach instructor
Next LiveTeach cohort7 seats left

Aug 22 to Nov 14, 2026 with Logan Thompson

Sat, 10:00 AM to 1:00 PM Eastern (ET) · 40 live hours plus six months of OnDemand included

View class & enroll
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Special Traingles

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
Elite Legendary Member
Posts: 10392
Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members
Location: Palo Alto, CA
Thanked: 2867 times
GMAT Score:800

by [email protected] » Sat Apr 19, 2014 10:30 pm
Hi shibsriz,

I'm going to give you a "nudge" and let you try this question again.

An equilateral triangle has 3 60 degree angles and 3 equal sides. By drawing a square inside of that triangle, the 3 smaller triangles take on certain characteristics. Since the 3 angles in the equilateral triangle are ALL 60s, what can you deduce about the 3 smaller triangles? Think about how triangles add up to 180 degrees and lines add up to 180 degrees. Next, think about what you know about side lengths in these triangles. You know that one of the sides is a 12; what you can figure out about the other sides?

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1556
Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members
Thanked: 448 times
GMAT Score:650

by theCodeToGMAT » Sun Apr 20, 2014 12:47 am
Answer = [spoiler]24 sqrt(3) + 36[/spoiler]
Attachments
solution.JPG
R A H U L
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pmFollowed by: 1906 members
Location: New York, NY
Thanked: 13060 times
GMAT Score:790

by GMATGuruNY » Sun Apr 20, 2014 3:17 am
When you post a problem, please include the answer choices.
Here, the answer choices are as follows:
36
36√3
24√3 + 24
24√3 + 36
72

Image

CD + CE + FG = 12+12+12 = 36.

∆ADG:
On the GMAT, the perimeter of a 30-60-90 triangle will ALWAYS include √3.
Implication:
Since DG = 12, AD + AG = (something with √3).

∆BEF:
Since ∆BEF and ∆ADG are congruent, BE + BF = AD + AG = (something with √3).

Thus:
∆ABC = 36 + 2(something with √3).
Only D is viable.

The correct answer is D.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1