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

Redeem
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 →

Geometry

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Sat Aug 30, 2008 10:14 pm
by gmat_junior » Mon Sep 01, 2008 8:22 pm
In isosceles triangle RST what is the measure of angle R?
1) The measure of angle T is 100
2) The measure of angle S is 40

Answer is A but in my opinion answer should be D not A. Can anybody explain me plzz? :lol:
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Sat Aug 30, 2008 3:35 am
Location: Bengaluru

by mankuthimma » Mon Sep 01, 2008 11:41 pm
Answer is not D because, ^R and ^T can be 70 each while ^S is 40
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 661
Joined: Tue Jul 08, 2008 12:58 pm
Location: France
Thanked: 48 times

by pepeprepa » Tue Sep 02, 2008 1:29 am
1) The measure of angle T is 100
The triangle is isocele so two angles have the same value. T is 100, and given you have 180° in a triangle, the other two angles have the same values:40 each
Sufficient.

2) The measure of angle S is 40
Angle S is 40. We could have S=40 T=40 and R=100 or S=40 T=100 or R=40 or S=40 T=70 R=70
Insufficient.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1