扫描二维码，直接登录
题库 / GMATAdvanced-DS-56
In quadrilateral ABCD, is angle BCD a right angle?
(1)Angle ABC is a right angle.
(2)Angle ADC is a right angle.
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）。
mark
四边形长度可以不同，条件不够，因此只有对角确定为直角三角形没法保证剩下的是不是直角
登录 或 注册 后可以参加讨论