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[洋葱] 勾股定理余弦定理
Author:
acchu
GeoGebra
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活动三：应用性质
龙形曲线-分形龙
异形操场
三角函数 的副本
第三周作业效果演示
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專題
平移
三角形內心
盾牌~~~~
拋物線與直線關係
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Ellipse
Sequences and Series
Differential Calculus
Congruence
Volume