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1、第 7 课时画垂线一、过A点画已知直线的垂线。二、经过 A点分别画出OM 和 ON的垂线。三、下图中 , 两条线段表示两幢新建的大楼,现在要从A 处将煤气送往两幢大楼,并要使煤气管道的总长度最短。请你在图上画出管道的位置.答案:一、略二、略三、从点 A向最近的河边作垂线段,图略尊敬的读者:本文由我和我的同事在百忙中收集整编出来,本文档在发布之前我们对内容进行仔细校对,但是难免会有不尽如人意之处,如有疏漏之处请指正,希望本文能为您解开疑惑 , 引发思考。文中部分文字受到网友的关怀和支持,在此表示感谢!在往后的日子希望与大家共同进步,成长。This article is collected and
2、 compiled by my colleagues and I in our busy schedule. We proofread the content carefully before the release of this article, but it is inevitable that there will be some unsatisfactory points. If there are omissions, please correct them. I hope this article can solve your doubts and arouse your thinking. Part of the text by the users care and support, thank you here! I hope to make progress and grow with you in the future.