问题标题:
初一数学一单元总结初一数学几何体单元怎么总结?
问题描述:
初一数学一单元总结
初一数学几何体单元怎么总结?
关致尧回答:
{详写的}
```````````````````1.1立体图形
`````````````上底面```````````````下底面`````````侧面
``````圆柱体圆形且与下底面相等圆形;平行于上底曲面,……
柱体:
``````棱柱上下底平行…为多边形……都是矩形…
`````……………………
椎体:
`````……………………
`````……………………
台体:
`````……………………
球体:……………………
(把图形画上,再把你们学的内容填上就ok了.)
````````````````1.2点线面
1.点(运动)→线(运动)→面(运动)→体
2.面面相交成线,线线相交成点.
3.旋转过程中图形的表面积与体积的变化情况.
……
{展开与折叠……}
````````````````1.3截一个几何体
1.球体(截面)——圆
2.圆柱→水平:…纵向:…斜切:…
柱体
棱柱→(同上)
3.椎体(同上…)
````````````````1.4从不同方向看
1.主视图(高、长)
2.左视图(高、宽)
3.俯视图(长、宽)
```````主视图```````左视图```````俯视图
球体
圆柱
圆锥
组成图
(把图形画上.)
`````````````````1.5平面图形
1.多边形
概念:……(图)
2.数多边形的边及三角形个数
(图)n(n-1)/2……
小结:
````````````````````生活中的几何体
``````````````````/````|````|````
````````````````分类``展开`截面``视图
````````````````````````|_____________|
``````````````````````````````|
```````````````````````````平面图形
```````````````````````````(生活)
ps:居然不能空格…所以用“```”来保持美观…
(呼...累死我liao……)
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