AMC 8 2014 Problem 15

AMC8 2014 年第 15

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The circumference of the circle with center O is divided into 12 equal arcs, marked the letters A through L as seen below. What is the number of degrees in the sum of the angles x and y?
如下图所示,圆心为 O 的圆被分成 12 个相等的圆弧,由字母 A 到 L 标识。那么角 x 和角 y 的度数之和是多少?
AMC 8 2014 Problem 15 figure
  1. A.75
  2. B.80
  3. C.90
  4. D.120
  5. E.150

正确答案 · Correct Answer

C

解析 · Solution

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