【SAT官方每日一题】7/25/12 Mathematics > Standard Multiple Choice

滚吧肥汤圆UID：3272378

Read the following SAT test question and then click on a button to select your answer.
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1 w% u2 U8 Y. j. |# f: KIn triangle , the length of side is and the length of side is . Which of the following could be the length of side ?

% y. R5 v! D% b. S2 k

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A.

, }9 N4 m. V# \/ h2 ~7 G, |B.

C.

6 U$ R1 |) n1 p( S) L+ n& BD.
$ j7 s& t: d; C: x
E.  
, u  d. c" l1 @2 p) c: g9 l. Q
正确答案:D

0 `4 @+ t; S4 J/ r解析:

By the Triangle Inequality, the sum of the lengths of any two sides of a triangle must be greater than the length of the remaining side. Therefore,, or . Thus, , which eliminates options (A), (B), and (C). Also by the Triangle Inequality, , or , which eliminates choice (E). Therefore, of the given choices, only choice (D), , could be the length of side.

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