AMC 8 2010 Problem 6
AMC8 2010 年第 6 题
变换与对称★☆☆☆☆
Which of the following figures has the greatest number of lines of symmetry?
下面哪个图形对称轴的个数最多？
- A. / 等边三角形
- B. / 非正方形的菱形
- C. / 非正方形的矩形
- D. / 等腰梯形
- E. / 正方形
正确答案 · Correct Answer
E
解析 · Solution
Solution 1
An equilateral triangle has 3 lines of symmetry. A non-square rhombus has 2 lines of symmetry. A non-square rectangle has 2 lines of symmetry. An isosceles trapezoid has 1 line of symmetry. A square has 4 lines of symmetry. Therefore, the answer is .
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