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希瓦定理
Author:
張丰耘
GeoGebra
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椭圆内切圆链
GeoGebra数学资源(4-8年级)
龙形曲线-分形龙2
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小学资源收集
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special
以剪貼比較圖形大小 題3
多次分割平行四邊形
面積2
诱导公式四(原点对称关系)
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Coordinates
Geometric Mean
Difference and Slope
Pyramid
Intersection