等边三角形的边长为4,则此三角形外接圆的半径为______. 发布时间:2017-04-30 04:28 │ 来源:www.tikuol.com 题型:填空题 问题: 等边三角形的边长为4,则此三角形外接圆的半径为______.
题型:填空题 —Mr. Wang, I have trouble _______ the text. —Remember _______ it three times at least. [ ]A. to understand; reading B. understanding; reading C. to understand; to read D. understanding; to read 查看答案