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圆的面积展开的副本
Author:
hong-z
,
qianqianhouhou
拖动n分圆,拖动展开展开圆,拖动拼图拼成长方形。
GeoGebra
通过上面操作请推导圆的面积公式。
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兩組對邊相等和有直角的四邊形
sanjiaohanshu
Earth with coastline
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整數÷整數_工作紙(一)_題4
線型函數
周界平移
作業
點和圓的位置關係的副本
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Continuity
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