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1、对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have对于
2、闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we haveAB图1
3、b图2a图3OA 图 4AB图5上面图形中，哪些是直线、射 线和线段?对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satis
4、fy the certain condition, we have小明小华我比你 高!你哪有 我高啊 !服了吧 !喔，原 来你比 我高!小 明小华对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the par
5、titioned matrix, prove that when satisfy the certain condition, we have考考你的眼力ABCD线段AB和线段CD哪一条长?对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operati
6、on corresponds the partitioned matrix, prove that when satisfy the certain condition, we have点D在AB的 延长线上点D与B重合点D在AB上ABCD AB=CDABCDBACDBCAACBDD对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point.
7、 This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have例题1：如图,已知线段a, 用圆规和直尺 画出线段AB , 使得AB=a解 :1 、画射线AC;2 、在射线AC上截 取AB=a线段AB就是所要画的线段。以点A为圆心， a为半径画弧， 交射线AC于点Ba对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即
8、便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have用比较线段大小的方法对a、b进行比较, 并用”符号连结。1.画射线OC;2.在射线OC上截取OA=a,截取OB=b解:因
9、为点B在线段OA的延长线上,所以OAOB, 即ab.baOCOBA对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy
10、 the certain condition, we have 例2：已知线段a、b（如图所示），画一条线段 c，使它的长度等于两条已知线段的长度的和。ab画法： （1）画射线AD；（2）用圆规在射线AD上截取AB=a；（3）用圆规在射线BD上截取BC=b。线段AC的长度就等于线段a，b的长度和，即线段AC 就是所求的线段c。对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the curre
11、nt research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have怎样用尺规作一条线段d等于两条 已知线段a,b的差？对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under wha
12、t condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have课堂作业课堂作业: :（1）两条线段能比较大小，而直线是不能比较大小的 （ ）（2）线段是图形，而线段的长度是一个数量 （ ）（3）线段的大小比较方法只有度量法一种 （ ）判断题对于闪光灯，很多人是恐惧的。同时驾驭两三灯，甚至五
13、灯，的确是很难。但是如果仅仅只是一灯的话，问题就简单很多。更何况即便是，一人一灯Changing the inequality into equality under what condition is the current research key point. This paper uses the and its elementary operation corresponds the partitioned matrix, prove that when satisfy the certain condition, we have这节课你学到了这节课你学到了 什么？有什么体会？什么？有什么体会？ 还有什么问题？还有什么问题？
