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圆的面积展开的副本
Author:
萧若茂
,
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。
New Resources
第八周作业
畫出對稱圖形
小数 的副本
判斷球體
Nested spiral octagon
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請自訂一個工具
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