Target Test Prep 20% Off Flash Sale is on! Code: FLASH20

Redeem
Target Test Prep
5-Day Free Trial
5-day free, full-access trial TTP

Available with Beat the GMAT members only code

MORE DETAILS
Target Test Prep
Magoosh
Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

MORE DETAILS
Magoosh

gmat prep geo

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 222
Joined: Tue Mar 25, 2008 3:52 pm
Thanked: 2 times

gmat prep geo

by vinviper1 » Thu Aug 28, 2008 11:01 am
Thanks!
Attachments
Q7.JPG
Top
Master | Next Rank: 500 Posts
Posts: 165
Joined: Wed May 28, 2008 11:25 pm
Thanked: 9 times
GMAT Score:730

by sumithshah » Thu Aug 28, 2008 11:45 am
A is fine- whats the OA?
Top
Senior | Next Rank: 100 Posts
Posts: 33
Joined: Mon Aug 04, 2008 6:52 am
Thanked: 2 times

by bomond » Thu Aug 28, 2008 12:05 pm
The opposite sides of the same angles are equal. From this point of view ST 1 is sufficient.
Top
Senior | Next Rank: 100 Posts
Posts: 30
Joined: Fri Jul 04, 2008 5:28 am
Thanked: 1 times

by kshankker » Thu Aug 28, 2008 9:55 pm
Yeah A is correct....st 1- tells u that side =6.since it is isoscel. it is sufficient to ans. in st 2 it doesnt mention any length - hence it is insufficient
Top
Legendary Member
Posts: 661
Joined: Tue Jul 08, 2008 12:58 pm
Location: France
Thanked: 48 times

by pepeprepa » Fri Aug 29, 2008 3:02 am
1)
You know BD=BC given BCD is isocele.
You have AD and you want to make a link with BC.
Angle DBC=180-4x
Angle ABC=180-3x
Join both equations with that:
Angle ABC= Angle ABD + Angle DBC
180-3x=Angle ABD + 180-4x
Angle ABD=x
So Angle ABD=Angle BAD so ABD is an isocele triangle
And AD=BD=BC=6

2) does not give you information about the sides.
Top
Post new topic Post Reply
• Page 1 of 1