扫描二维码，直接登录
题库 / GMATAdvanced-DS-44
In the figure above,B is on ~$\vec{AC}$~, D is on ~$\vec{AE}$~, ~$\vec{AB}$~has the same length as ~$\vec{BC}$~,and ∠ABD has the same measure as ∠ACE. What is the length of ~$\vec{DB}$~？
(1)The length of ~$\vec{EC}$~ is 6.
(2)The length of ~$\vec{DE}$~ is 5.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
相似三角形各个角相等，各个边成比例。知道各边的比例和一条边，可以求出另一条对应边。
相似三角形