問題詳情
4.上圖是由AB﹑BC﹑CD﹑DE﹑EA五條直線所圍成的正五邊形﹐其中
軸，斜率為正的直線為____________
軸，斜率為正的直線為____________
參考答案
答案：B
難度：困難0.3391
統計：A(47),B(294),C(169),D(252),E(0)
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