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[备考经验] 【SAT官方每日一题】7/25/12 Mathematics > Standard Multiple Choice [复制链接]

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发表于 2012-7-27 22:55:17 |只看该作者 |倒序浏览
Read the following SAT test question and then click on a button to select your answer. # m" r3 j, I+ Z- H
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In triangle , the length of side is and the length of side is . Which of the following could be the length of side ?( C2 @, k" N7 U/ a; h2 E( Z, c, F8 {
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D.
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正确答案:D
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1 X7 m8 q- U! ~! `7 ^/ l& [5 c; Q解析:6 n! p( U0 o3 I  r' `+ Y

5 E6 G: s# _# ^: s& w: ABy 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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