DS Question Pls explain OA

This topic has expert replies
Source: — Data Sufficiency |

Legendary Member
Posts: 891
Joined: Sat Aug 16, 2008 4:21 am
Thanked: 27 times
Followed by:1 members
GMAT Score:660(

by 4meonly » Sun Sep 28, 2008 2:57 am
I solved this question earlier
but I guess my approach is not the simpliest
https://www.beatthegmat.com/gmat-prep-ds ... html#69027

Generally, regognize isosceles triangles and the summ of their angles
External angles will also help you