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fchengang动画
Author:
符成岗
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
龙形曲线-分形龙
科赫雪花
圓的基本性質
圓的切線方程
Discover Resources
有人要告白嗎?
反演(Inversion)
如何求弦長
test
圓的面積的副本
Discover Topics
Exponential Functions
General Quadrilateral
Coordinates
Surface
Distributions