一个等边的三角形用3条直线最多可以分成多少个区域.
那你拿张纸画一下就好了,很简单的哇,我画下来是7块,不知道有没有错.
What is the greatest number of regions into which an equilateral triangle can be divided using exactly three straight li
What is the greatest number of regions into which an equilateral triangle can be divided using exactly three straight lines..
英语人气：799 ℃时间：2020-05-13 15:26:00
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