七年级下册数学第一章重点内容

2025-04-01 10:19:57
推荐回答(3个)
回答1:

我们7年级上下册都学了呢!呵呵,我帮你!
可是我的是浙教版的呀!!如果你是人教的怎么办...
我吧浙教的告诉你,如果你是人教也要采纳我呀
全等三角形
重点:1.4与1.5合订
1,了解全等三角形的概念,会用叠合等方法判定是否全等
2,了解全等三角形的概念
3,探索并掌握2个三角形全等的条件
4,了解三角形的稳定性
5,会用全等三角的性质判定角之间线段之间的互相关系
总结:1.4全等三角形的对应边相等,对应角相等
1.5重点:1,三边对应响等的2个三角形全等,简称SSS或边边边
2,有一个角和夹这个角的两边对应相等的2个三角形全等,简称SAS或边角边
3,线段垂直平分线上的点到线段两端点的距离相等
4,有两个角呵这两个角对应相等的两个三角形全等,简称ASA或角边角
5,两个角呵其中一角的对应相等的两个三角形全等,简称角角边或AAS
6,角平分见上的点到角两边的距离相等

1.6
重点:1,了解线段的垂直平分线的概念,了解线段的垂直平分线的点到线段两段的距离相等
2,了解角平分线上的点到角两边的距离相等
3,会用直尺呵圆规做角平分线呵线段的垂直平分线。会用直尺呵圆规作1个角等于已知角。会用直尺呵圆规作三角形:已知三边作三角形,已知两边及其夹角作三角形,已知两角1边作三角形
总结:就是作图,我怎么说呢?
都是我自己打出来的,累死我了,我也初1,不过我在重点班,7年级所有内容都教完了,从下册书上摘录的,采纳我吧!

回答2:

哎~我还是上册呢~帮不了你

回答3:

有理数的运算

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