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Author:
Journal / Book Title:
Year:
Volume:
Issue:
qiao xuan zhuan miao jie ti
Author(s):
SHI Dahao
Pages:
22
-
23
Year:
2006
Issue:
Z2
Journal:
School Journal of Mathematics
Keyword:
顺时针方向旋转
;
解题过程
;
旋转角
;
图形
;
定点
;
证明
;
直线
;
逆时针
;
运用
;
位置
;
Abstract:
<正>在平面内把某图形绕某个定点旋转一定的角度.这样的变换叫做旋转.这个定点叫做旋转中心,这个定角叫做旋转角.利用旋转的特征解题是几何中常用的方法,巧妙地运用旋转知识能够使复杂的几何题化繁为简.现举例如下:
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