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GeoGebra
GeoGebra Classroom
GeoGebra
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拋物線定義
Author:
luke huang
GeoGebra
New Resources
正方形雪花图案
多邊形的面積
直線的斜率：水平變化 & 鉛垂變化
折扣
比較五件物件的重量
Discover Resources
directed number_hot air balloon
Circumcentre
二次函数随参数a,b,c的变化而变化.许兴华数学
规律点问题的动态演示
圆锥曲线