GWD TN 10-22

kaipiggy

Lines m and n intersect, as shown in the figure above.What is the value of u - w?
(1)u = 90
(2)Lines m and n are perpendicular.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer: d


想问下这个题是什么意思？

kaipiggy

哦，上面的圈圈原来表示度数呀。。。谢谢了！

selinamba

U的角度减去W的角度

tracytrace

选D啊
两条线相交啊,U+W等于180.所以任意条件都能推出u-w等于0咯