来自卢健儿的问题
下面图形：四边形，三角形，正方形，梯形，平行四边形，圆，从中任取一个图形既是轴对称图形又是中心对称图形的概率为______．
下面图形：四边形，三角形，正方形，梯形，平行四边形，圆，从中任取一个图形既是轴对称图形又是中心对称图形的概率为______．
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2020-03-30 19:32
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高志安
因为在四边形，三角形，正方形，梯形，平行四边形，圆6个图形中，
既是轴对称图形又是中心对称图形的正方形和圆两个，
所以从中任取一个图形既是轴对称图形又是中心对称图形的概率为：2÷6=13
2020-03-30 19:34:35
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