论文部分内容阅读
1.教科书中的角定义存在矛盾.人教版《数学》七年级(上)第136页,给出的角的一般性定义是:“有公共端点的两条射线组成的图形叫做角”.华东师大版《数学》七年级(上)第151页,给出的角的一般性定义是:“角是由两条有公共端点的射线组成的图形”.人教版《数学》七年级(下)第63页,给出的三角形的内角的定义是:“在图7.1—1中,线段AB、BC、CA
1. There is a contradiction in the definition of the angle of the textbook.Physical PEP Edition ”Mathematics“ seventh grade (on) page 136, given the angle of the general definition is: ”The public end of the two rays of the composition of the graphics is called angle “. East China Normal University version of” Mathematics “seventh grade (on) p. 151, given the angle of the general definition is: ” Corner is composed of two rays with a common endpoint “PEP. Mathematics, ”seventh grade (on the next page, page 63, the definition of the internal angle of the triangle is: " in Figure 7.1-1, the line AB, BC, CA