AMC 8 1997 Problem 15

AMC8 1997 年第 15 题

四边形与多边形★★★☆☆

Each side of the large square in the figure is trisected (divided into three equal parts). The corners of an inscribed square are at these trisection points, as shown. The ratio of the area of the inscribed square to the area of the large square is

图中大正方形的每条边被三等分。在等分点处作内接正方形，如图所示。内接正方形的面积与大正方形的面积之比是

A. $\dfrac{\sqrt{3}}{3}$
B. $\dfrac{5}{9}$
C. $\dfrac{2}{3}$
D. $\dfrac{\sqrt{5}}{3}$
E. $\dfrac{7}{9}$

正确答案 · Correct Answer

B

解析 · Solution

解析整理中

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