【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.
6 b1 B3 b/ a) ?$ V( e
In triangle , the length of side is and the length of side is . Which of the following could be the length of side ?

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8 g) ]0 N2 N% b0 [A.

B.
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9 Z) d8 F5 P' n, c# E) J$ o4 W
D.
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E.  

% S" x( n% x& v) ]4 i' @* _正确答案:D

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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