AMC 8 2007 Problem 8

AMC8 2007 年第 8

四边形与多边形★★☆☆☆
IntrapezoidABCD,\overlineADisperpendicularto\overlineDC,AD=AB=3,andDC=6.Inaddition,Eison\overlineDC,and\overlineBEisparallelto\overlineAD.FindtheareaofBEC.In trapezoid ABCD, \overlineAD is perpendicular to \overlineDC, AD = AB = 3, and DC = 6. In addition, E is on \overlineDC, and \overlineBE is parallel to \overlineAD. Find the area of \triangle BEC.
在梯形 ABCD 中,线段 AD 和线段 DC 垂直,AD=AB=3,DC=6。另外,E 在线段 DC 上,BE 平行于 AD。求△BEC 的面积。
  1. A.3
  2. B.4.5
  3. C.6
  4. D.9
  5. E.18

正确答案 · Correct Answer

B

解析 · Solution

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