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1、初一下学期数学知识点：认识三角形知识点|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 1 页，共 3 页第 2 页初一下学期数学知识点：认识三角形知识点读书使学生认识丰富多彩的世界，获取信息和知识，拓展视野。接下来小编为大家精心准备了认识三角形知识点，希望大家喜欢!一、三角形的根本概念：1、三角形的概念：由不在同一条直线上的三条线段首尾顺次相接所组成的图形。三角形 ABC记作：ABC。2、相关概念：三角形的边：组成三角形的三条线段。记作：AB、AC、BC。三角形的内角：每两条边所组成的角(简称三角形的角)。记作：A、B、C3、三角形的分类：二、三
2、角形三边关系：1、三角形任何两边的和大于第三边。几何语言：假设a、b、c 为ABC的三边，那么a+bc,a+cb,b+ca.想一想：这个在实际解题中该怎样应用?2、三边关系也可表述为：三角形任何两边的差都小于第三边。三、三角形的内角和定理：三角形三个内角的和等于1800。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 2 页，共 3 页文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G1
3、0C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C
4、9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F
5、4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D
6、9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:
7、CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O
8、8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5
9、HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9第 3 页几何语言：ABC 中，A+B+C=1800。四、三角形的三线：问题 1、如何作三角形的高线、角平分线、中线?问题 2、三角形的高线、角平分线、中线各有多少条，它们的交点在什么位置?问题 3、三角形的中线有什么应用?认识三角形知识点就到这儿了，体会每篇文章的不同，摘取自己想要的，友情提醒，理解最重要哦!|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|
10、欢.|迎.|下.|载.第 3 页，共 3 页文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8
11、R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 Z
12、Q9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3
13、L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档
14、编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8
15、F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9文档编码:CQ8F2O8U7X5 HA10G10C8R7C9 ZQ9F4V3L2D9