AMC 8 2014 Problem 14

AMC8 2014 年第 14

四边形与多边形★★★☆☆
Rectangle ABCD and right triangle DCE have the same area. They are joined to form a trapezoid, as shown. What is DE?
矩形 ABCD 和直角三角形 DCE 的面积相同。他们拼起来形成了一个梯形,如下图所示。那么 DE 的长度是多少?
AMC 8 2014 Problem 14 figure
  1. A.12
  2. B.13
  3. C.14
  4. D.15
  5. E.16

正确答案 · Correct Answer

B

解析 · Solution

解析整理中

继续练习

真题版权归属 MAA(AMC)。本站仅供学习用途。版权方如有异议,请联系本站予以下架。

Problems © MAA (AMC). This site is for study purposes only. Rightsholders may contact us for removal.