AMC 8 2013 Problem 24

AMC8 2013 年第 24 题

面积与周长（综合）★★★★☆

Squares ABCD, EFGH, and GHIJ are equal in area. Points C and D are the midpoints of sides IH and HE, respectively. What is the ratio of the area of the shaded pentagon AJICB to the sum of the areas of the three squares?

正方形 ABCD，EFGH 和 GHIJ 的面积都相等。点 C 和点 D 分别是边 IH 和 HE 的中点。那么阴影部分五边形 AJICB 的面积和三个正方形面积总和的比值是多少？

A. $\displaystyle \hspace{.05in}\frac{1}{4}$
B. $\displaystyle \hspace{.05in}\frac{7}{24}$
C. $\displaystyle \hspace{.05in}\frac{1}{3}$
D. $\displaystyle \hspace{.05in}\frac{3}{8}$
E. $\displaystyle \hspace{.05in}\frac{5}{12}$

正确答案 · Correct Answer

解析 · Solution

解析整理中

继续练习

免费刷 2013 整卷 →登录解锁诊断（看你哪儿弱）→