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GeoGebra
GeoGebra Classroom
GeoGebra
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20200818-2
Author:
173561212
GeoGebra
New Resources
龙形曲线-分形龙
折扣
三角函数 的副本
斜率的值
直線的斜率：水平變化 & 鉛垂變化
Discover Resources
卡特蘭數 (Catalan Number)
大邊對大角
極線獨立定理 / polar independence theorem
How to draw an octagon with ruler and compasses?
圆的面积展开的副本