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英语翻译1.VOCABULARY Explain what is meant by the term n-gon.2.W

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英语翻译
1.VOCABULARY Explain what is meant by the term n-gon.
2.WRITING Imagine that you can tie a string tightly around a polygon.If the polygon is convex,will the length of the string be equal to the distance around the polygon?What if the polygon is concave?Explain.
楼上的写的什么啊..
用英文词汇解释什么是n—边形.
想象你可以用一条绳子紧紧围绕一个多边形.如果多边形是凸,绳子的长度是否能够围绕多边形?那如果多边形是凹?